iio: pressure: st_pressure: Use devm_iio_device_alloc

Using devm_iio_device_alloc makes code simpler.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/iio/pressure/st_pressure_core.c

@@ -275,7 +275,6 @@ void st_press_common_remove(struct iio_dev *indio_dev)
 		st_sensors_deallocate_trigger(indio_dev);
 		st_press_deallocate_ring(indio_dev);
 	}
-	iio_device_free(indio_dev);
 }
 EXPORT_SYMBOL(st_press_common_remove);
 

drivers/iio/pressure/st_pressure_i2c.c

@@ -25,11 +25,9 @@ static int st_press_i2c_probe(struct i2c_client *client,
 	struct st_sensor_data *pdata;
 	int err;
 
-	indio_dev = iio_device_alloc(sizeof(*pdata));
-	if (indio_dev == NULL) {
-		err = -ENOMEM;
-		goto iio_device_alloc_error;
-	}
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*pdata));
+	if (!indio_dev)
+		return -ENOMEM;
 
 	pdata = iio_priv(indio_dev);
 	pdata->dev = &client->dev;
@@ -38,14 +36,9 @@ static int st_press_i2c_probe(struct i2c_client *client,
 
 	err = st_press_common_probe(indio_dev, client->dev.platform_data);
 	if (err < 0)
-		goto st_press_common_probe_error;
+		return err;
 
 	return 0;
-
-st_press_common_probe_error:
-	iio_device_free(indio_dev);
-iio_device_alloc_error:
-	return err;
 }
 
 static int st_press_i2c_remove(struct i2c_client *client)

drivers/iio/pressure/st_pressure_spi.c

@@ -24,11 +24,9 @@ static int st_press_spi_probe(struct spi_device *spi)
 	struct st_sensor_data *pdata;
 	int err;
 
-	indio_dev = iio_device_alloc(sizeof(*pdata));
-	if (indio_dev == NULL) {
-		err = -ENOMEM;
-		goto iio_device_alloc_error;
-	}
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*pdata));
+	if (indio_dev == NULL)
+		return -ENOMEM;
 
 	pdata = iio_priv(indio_dev);
 	pdata->dev = &spi->dev;
@@ -37,14 +35,9 @@ static int st_press_spi_probe(struct spi_device *spi)
 
 	err = st_press_common_probe(indio_dev, spi->dev.platform_data);
 	if (err < 0)
-		goto st_press_common_probe_error;
+		return err;
 
 	return 0;
-
-st_press_common_probe_error:
-	iio_device_free(indio_dev);
-iio_device_alloc_error:
-	return err;
 }
 
 static int st_press_spi_remove(struct spi_device *spi)