gpio: use devm_kzalloc

We can use devres API for allocating memory. No need of using kfree.

Signed-off-by: Varka Bhadram <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

drivers/gpio/gpio-adp5588.c

···
 		return -EIO;
 	}
 
-	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	dev = devm_kzalloc(&client->dev, sizeof(*dev), GFP_KERNEL);
 	if (dev == NULL)
 		return -ENOMEM;
 
···
 err_irq:
 	adp5588_irq_teardown(dev);
 err:
-	kfree(dev);
 	return ret;
 }
 

drivers/gpio/gpio-mcp23s08.c

···
 	if (!chips)
 		return -ENODEV;
 
-	data = kzalloc(sizeof(*data) + chips * sizeof(struct mcp23s08),
-			GFP_KERNEL);
+	data = devm_kzalloc(&spi->dev,
+			    sizeof(*data) + chips * sizeof(struct mcp23s08),
+			    GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;
+
 	spi_set_drvdata(spi, data);
 
 	spi->irq = irq_of_parse_and_map(spi->dev.of_node, 0);
···
 			continue;
 		gpiochip_remove(&data->mcp[addr]->chip);
 	}
-	kfree(data);
 	return status;
 }