staging: iio: light: isl29028: Use devm_iio_device_alloc

Using devm_iio_device_alloc makes code simpler.

Signed-off-by: Sachin Kamat <[e-mail]>
Cc: Laxman Dewangan <[e-mail]>
Signed-off-by: Jonathan Cameron <[e-mail]>

drivers/staging/iio/light/isl29028.c

···
 	struct iio_dev *indio_dev;
 	int ret;
 
-	indio_dev = iio_device_alloc(sizeof(*chip));
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip));
 	if (!indio_dev) {
 		dev_err(&client->dev, "iio allocation fails\n");
 		return -ENOMEM;
···
 	if (IS_ERR(chip->regmap)) {
 		ret = PTR_ERR(chip->regmap);
 		dev_err(chip->dev, "regmap initialization failed: %d\n", ret);
-		goto exit_iio_free;
+		return ret;
 	}
 
 	ret = isl29028_chip_init(chip);
 	if (ret < 0) {
 		dev_err(chip->dev, "chip initialization failed: %d\n", ret);
-		goto exit_iio_free;
+		return ret;
 	}
 
 	indio_dev->info = &isl29028_info;
···
 	if (ret < 0) {
 		dev_err(chip->dev, "iio registration fails with error %d\n",
 			ret);
-		goto exit_iio_free;
+		return ret;
 	}
 	return 0;
-
-exit_iio_free:
-	iio_device_free(indio_dev);
-	return ret;
 }
 
 static int isl29028_remove(struct i2c_client *client)
···
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 
 	iio_device_unregister(indio_dev);
-	iio_device_free(indio_dev);
 	return 0;
 }