staging: rtl8723bs: Switch constant place in test

Switch constant place as it should be on the right side of the test.
Issue found by checkpatch.
Signed-off-by: Javier F. Arias <jarias.linux@gmail.com>
Link: https://lore.kernel.org/r/20191007033202.45czxuochtylkddf@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/core/rtw_xmit.c

@@ -2992,7 +2992,7 @@ int rtw_xmit_thread(void *context)
 	do {
 		err = rtw_hal_xmit_thread_handler(padapter);
 		flush_signals_thread();
-	} while (_SUCCESS == err);
+	} while (err == _SUCCESS);
 
 	complete(&padapter->xmitpriv.terminate_xmitthread_comp);