staging: r8188eu: make return values consistent

rtw_pwr_wakeup should return _SUCCESS or _FAIL.

Replace false with _FAIL in one place and reformat the if-statement.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220413193654.258507-3-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_pwrctrl.c

@@ -403,10 +403,8 @@ int rtw_pwr_wakeup(struct adapter *padapter)
 		}
 	}
 
-	/* TODO: the following checking need to be merged... */
-	if (padapter->bDriverStopped || !padapter->bup ||
-	    !padapter->hw_init_completed) {
-		ret = false;
+	if (padapter->bDriverStopped || !padapter->bup || !padapter->hw_init_completed) {
+		ret = _FAIL;
 		goto exit;
 	}