hwmon: fix freeing of gpio_data and irq

If already requested, gpio_data and irq should be freed in the case of an
error.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/hwmon/sht15.c

@@ -562,7 +562,7 @@ static int __devinit sht15_probe(struct platform_device *pdev)
 	ret = sysfs_create_group(&pdev->dev.kobj, &sht15_attr_group);
 	if (ret) {
 		dev_err(&pdev->dev, "sysfs create failed");
-		goto err_free_data;
+		goto err_release_gpio_data;
 	}
 
 	ret = request_irq(gpio_to_irq(data->pdata->gpio_data),
@@ -581,10 +581,12 @@ static int __devinit sht15_probe(struct platform_device *pdev)
 	data->hwmon_dev = hwmon_device_register(data->dev);
 	if (IS_ERR(data->hwmon_dev)) {
 		ret = PTR_ERR(data->hwmon_dev);
-		goto err_release_gpio_data;
+		goto err_release_irq;
 	}
 	return 0;
 
+err_release_irq:
+	free_irq(gpio_to_irq(data->pdata->gpio_data), data);
 err_release_gpio_data:
 	gpio_free(data->pdata->gpio_data);
 err_release_gpio_sck: