watchdog: visconti: 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]>
Reviewed-by: Nobuhiro Iwamatsu <[e-mail]>
Signed-off-by: Guenter Roeck <[e-mail]>
Signed-off-by: Wim Van Sebroeck <[e-mail]>

drivers/watchdog/visconti_wdt.c

···
 	struct visconti_wdt_priv *priv;
 	struct device *dev = &pdev->dev;
 	struct clk *clk;
-	int ret;
 	unsigned long clk_freq;
 
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
···
 	watchdog_stop_on_unregister(wdev);
 
 	/* This overrides the default timeout only if DT configuration was found */
-	ret = watchdog_init_timeout(wdev, 0, dev);
-	if (ret)
-		dev_warn(dev, "Specified timeout value invalid, using default\n");
+	watchdog_init_timeout(wdev, 0, dev);
 
 	return devm_watchdog_register_device(dev, wdev);
 }