staging: iio: adis16201: Use devm_iio_device_alloc

Using devm_iio_device_alloc makes code simpler.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/staging/iio/accel/adis16201_core.c

@@ -182,11 +182,10 @@ static int adis16201_probe(struct spi_device *spi)
 	struct iio_dev *indio_dev;
 
 	/* setup the industrialio driver allocated elements */
-	indio_dev = iio_device_alloc(sizeof(*st));
-	if (indio_dev == NULL) {
-		ret = -ENOMEM;
-		goto error_ret;
-	}
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
 	st = iio_priv(indio_dev);
 	/* this is only used for removal purposes */
 	spi_set_drvdata(spi, indio_dev);
@@ -201,10 +200,10 @@ static int adis16201_probe(struct spi_device *spi)
 
 	ret = adis_init(st, indio_dev, spi, &adis16201_data);
 	if (ret)
-		goto error_free_dev;
+		return ret;
 	ret = adis_setup_buffer_and_trigger(st, indio_dev, NULL);
 	if (ret)
-		goto error_free_dev;
+		return ret;
 
 	/* Get the device into a sane initial state */
 	ret = adis_initial_startup(st);
@@ -218,9 +217,6 @@ static int adis16201_probe(struct spi_device *spi)
 
 error_cleanup_buffer_trigger:
 	adis_cleanup_buffer_and_trigger(st, indio_dev);
-error_free_dev:
-	iio_device_free(indio_dev);
-error_ret:
 	return ret;
 }
 
@@ -231,7 +227,6 @@ static int adis16201_remove(struct spi_device *spi)
 
 	iio_device_unregister(indio_dev);
 	adis_cleanup_buffer_and_trigger(st, indio_dev);
-	iio_device_free(indio_dev);
 
 	return 0;
 }