How can I retry a URLRequest.sharedDataTask until the response is 200?

I am new to Swift and currently stuck on exiting a function containing shared.dataTask once the httpResponse is 200. Any suggestions will be appreciated.

func retryFunc(url: String, requestType: String, requestJsonData: Any, retriesLeft: Int) {
    //Function body
    // declarations
    while self.numberOfretries > 0 {
        let task = URLSession.shared.dataTask(with: request) { data, response, error in
            guard let data = data, error == nil else {
                print(error?.localizedDescription ?? "No data")
                return
            }            
            
            if let httpResponse = response as? HTTPURLResponse {
                print(httpResponse.statusCode)
                if httpResponse.statusCode == 200 {
                    print("Got 200")
                    self.numberOfretries = 0
                    let responseJSON = try? JSONSerialization.jsonObject(with: data, options: [])
                    if let responseJSON = responseJSON as? [String: Any] {
                        print(responseJSON)
                    }
                    return
                }
                if httpResponse.statusCode == 500 {
                    print("Got 500")
                    self.numberOfretries -= 1
                    
                    self.retryFunc(url: url, requestType: <request-type>, requestJsonData: json, retriesLeft: self.numberOfretries)
                }
            }
        }
        task.resume()
    }
}

//calling function from another class
func retryFunc(url: <url>, requestType: <type>, requestJsonData: <jsonData>, retriesLeft: <3>)

I need to exit the function on getting 200 but it still continues to run for the number of retries specified while calling the function.

Consider that the while loop is outside of the asynchronous task, so a couple of 100 tasks can be created before the counter is being decremented.

A better way is to remove the while loop and check for 0 inside the closure – the retriesLeft parameter makes no sense – for example

func retryFunc(url: String, requestType: String, requestJsonData: Any) {
    //Function body
    // declarations
    
    let task = URLSession.shared.dataTask(with: request) { data, response, error in
                        
        if let error = error {
            print(error.localizedDescription)
            return
        }
                            
        if let httpResponse = response as? HTTPURLResponse {
           print(httpResponse.statusCode)
           if httpResponse.statusCode == 200 {
               print("Got 200")
               do {
                   if let responseJSON = try JSONSerialization.jsonObject(with: data!) as? [String: Any] {
                       print(responseJSON)
                   }
               } catch { print(error) }

           } else if httpResponse.statusCode == 500 {
               print("Got 500")
               self.numberOfretries -= 1
               if self.numberOfretries == 0 { return }
    
               self.retryFunc(url: url, requestType: requestType, requestJsonData: requestJsonData)
           }
       }
    }
    task.resume()
}