gpio: adp5520: use devm_kzalloc()

Use devm_kzalloc() to make cleanup paths simpler.

Signed-off-by: Jingoo Han <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

drivers/gpio/gpio-adp5520.c

···
 		return -ENODEV;
 	}
 
-	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
 	if (dev == NULL) {
 		dev_err(&pdev->dev, "failed to alloc memory\n");
 		return -ENOMEM;
···
 	return 0;
 
 err:
-	kfree(dev);
 	return ret;
 }
 
···
 		return ret;
 	}
 
-	kfree(dev);
 	return 0;
 }