Fix to qmlpreview failing to upload files

Return to correct function call order when preparing
and uploading data to the device.
(Manual pick from master)

Change-Id: I0a78b6614765bfae5c3accd99c1c150540871aac
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/android/androidqmlpreviewworker.cpp

@@ -209,8 +209,8 @@ void AndroidQmlPreviewWorker::start()
     }
     const bool previewStarted = ensureAvdIsRunning()
                                 && checkAndInstallPreviewApp()
-                                && uploadPreviewArtefacts()
                                 && preparePreviewArtefacts()
+                                && uploadPreviewArtefacts()
                                 && startPreviewApp();
 
     previewStarted ? reportStarted() : reportStopped();