gpio: intel-mid: switch to devm_gpiochip_add_data()

The error handling is not correct since the commit 3f7dbfd8 ("gpio:
intel-mid: switch to using gpiolib irqchip helpers"). Switch to devres API to
fix the potential resource leak.

Fixes: commit 3f7dbfd8 ("gpio: intel-mid: switch to using gpiolib irqchip helpers")
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-intel-mid.c

@@ -401,7 +401,7 @@ static int intel_gpio_probe(struct pci_dev *pdev,
 	spin_lock_init(&priv->lock);
 
 	pci_set_drvdata(pdev, priv);
-	retval = gpiochip_add_data(&priv->chip, priv);
+	retval = devm_gpiochip_add_data(&pdev->dev, &priv->chip, priv);
 	if (retval) {
 		dev_err(&pdev->dev, "gpiochip_add error %d\n", retval);
 		return retval;