Call reset before deleting the MTRDiagnosticLogsTransferHandler object

src/darwin/Framework/CHIP/MTRDiagnosticLogsTransferHandler.mm

@@ -93,12 +93,12 @@
     } else if (event.EventType != TransferSession::OutputEventType::kMsgToSend || !event.msgTypeData.HasMessageType(MessageType::BlockAckEOF)) {
         error = CHIP_ERROR_INTERNAL;
     }
+    Reset();
 
     // Notify the MTRDevice via the callback that the BDX transfer has completed with error or success.
     if (mCallback) {
         mCallback(error != CHIP_NO_ERROR ? NO : YES);
     }
-    Reset();
     return error;
 }