watchdog: rzg2l_wdt: Remove comparison with zero

devm_add_action_or_reset() could return -ENOMEM or zero. Thus, remove
comparison with zero of the returning value to make code simpler.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240531065723.1085423-7-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

Author: claudiubeznea

drivers/watchdog/rzg2l_wdt.c

@@ -318,7 +318,7 @@ static int rzg2l_wdt_probe(struct platform_device *pdev)
 
 	watchdog_set_drvdata(&priv->wdev, priv);
 	ret = devm_add_action_or_reset(&pdev->dev, rzg2l_wdt_pm_disable, &priv->wdev);
-	if (ret < 0)
+	if (ret)
 		return ret;
 
 	watchdog_set_nowayout(&priv->wdev, nowayout);