watchdog: at91rm9200: Only warn once about problems in .remove()

The single difference between returning 0 and returning an error code in
a platform remove callback is that in the latter case the platform core
emits a warning about the error being ignored.

at91wdt_remove() already emits a warning in the error case, so suppress
the more generic (and less helpful) one by returning 0.

Signed-off-by: Uwe Kleine-König <[email protected]>
Reviewed-by: Claudiu Beznea <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>

Author: Uwe Kleine-König

drivers/watchdog/at91rm9200_wdt.c

@@ -270,7 +270,7 @@ static int at91wdt_remove(struct platform_device *pdev)
 	misc_deregister(&at91wdt_miscdev);
 	at91wdt_miscdev.parent = NULL;
 
-	return res;
+	return 0;
 }
 
 static void at91wdt_shutdown(struct platform_device *pdev)