watchdog: rzg2l_wdt: don't print superfluous errors

The watchdog core will handle error messages already.

Signed-off-by: Wolfram Sang <[e-mail]>
Reviewed-by: Guenter Roeck <[e-mail]>
Signed-off-by: Guenter Roeck <[e-mail]>
Signed-off-by: Wim Van Sebroeck <[e-mail]>

drivers/watchdog/rzg2l_wdt.c

···
 	watchdog_set_nowayout(&priv->wdev, nowayout);
 	watchdog_stop_on_unregister(&priv->wdev);
 
-	ret = watchdog_init_timeout(&priv->wdev, 0, dev);
-	if (ret)
-		dev_warn(dev, "Specified timeout invalid, using default");
+	watchdog_init_timeout(&priv->wdev, 0, dev);
 
 	return devm_watchdog_register_device(&pdev->dev, &priv->wdev);
 }