gpio: intel-mid: switch to devm_gpiochip_add_data()

The error handling is not correct since the commit 3f7dbfd8eea9 ("gpio:
intel-mid: switch to using gpiolib irqchip helpers"). Switch to devres API to
fix the potential resource leak.

Fixes: commit 3f7dbfd8eea9 ("gpio: intel-mid: switch to using gpiolib irqchip helpers")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-intel-mid.c b/drivers/gpio/gpio-intel-mid.c
index cdaba13..a99cf4b 100644
--- a/drivers/gpio/gpio-intel-mid.c
+++ b/drivers/gpio/gpio-intel-mid.c
@@ -401,7 +401,7 @@
 	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;