pinctrl: ocelot: simplify the return expression of ocelot_gpiochip_register()

Simplify the return expression.
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Link: https://lore.kernel.org/r/20200921131057.92895-1-miaoqinglang@huawei.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-ocelot.c

@@ -1120,7 +1120,7 @@ static int ocelot_gpiochip_register(struct platform_device *pdev,
 {
 	struct gpio_chip *gc;
 	struct gpio_irq_chip *girq;
-	int ret, irq;
+	int irq;
 
 	info->gpio_chip = ocelot_gpiolib_chip;
 
@@ -1147,11 +1147,7 @@ static int ocelot_gpiochip_register(struct platform_device *pdev,
 		girq->handler = handle_edge_irq;
 	}
 
-	ret = devm_gpiochip_add_data(&pdev->dev, gc, info);
-	if (ret)
-		return ret;
-
-	return 0;
+	return devm_gpiochip_add_data(&pdev->dev, gc, info);
 }
 
 static const struct of_device_id ocelot_pinctrl_of_match[] = {