pinctrl: Don't override the error code in probe error handling

Otherwise, we return 0 in probe error paths when gpiochip_remove() returns 0.
Also show error message if gpiochip_remove() fails.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-coh901.c

@@ -830,7 +830,8 @@ static int __init u300_gpio_probe(struct platform_device *pdev)
 	return 0;
 
 err_no_range:
-	err = gpiochip_remove(&gpio->chip);
+	if (gpiochip_remove(&gpio->chip))
+		dev_err(&pdev->dev, "failed to remove gpio chip\n");
 err_no_chip:
 err_no_domain:
 err_no_port:

drivers/pinctrl/pinctrl-sunxi.c

@@ -2000,7 +2000,8 @@ static int sunxi_pinctrl_probe(struct platform_device *pdev)
 	return 0;
 
 gpiochip_error:
-	ret = gpiochip_remove(pctl->chip);
+	if (gpiochip_remove(pctl->chip))
+		dev_err(&pdev->dev, "failed to remove gpio chip\n");
 pinctrl_error:
 	pinctrl_unregister(pctl->pctl_dev);
 	return ret;

drivers/pinctrl/vt8500/pinctrl-wmt.c

@@ -609,8 +609,7 @@ int wmt_pinctrl_probe(struct platform_device *pdev,
 	return 0;
 
 fail_range:
-	err = gpiochip_remove(&data->gpio_chip);
-	if (err)
+	if (gpiochip_remove(&data->gpio_chip))
 		dev_err(&pdev->dev, "failed to remove gpio chip\n");
 fail_gpio:
 	pinctrl_unregister(data->pctl_dev);