iio: pressure: ms5611: Make ms5611_remove() return void

Up to now ms5611_remove() returns zero unconditionally. Make it return
void instead which makes it easier to see in the callers that there is
no error to handle.

Also the return value of i2c and spi remove callbacks is ignored anyway.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Link: https://lore.kernel.org/r/20211013203223.2694577-16-u.kleine-koenig@pengutronix.deSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/pressure/ms5611.h

@@ -61,6 +61,6 @@ struct ms5611_state {
 
 int ms5611_probe(struct iio_dev *indio_dev, struct device *dev,
 		 const char *name, int type);
-int ms5611_remove(struct iio_dev *indio_dev);
+void ms5611_remove(struct iio_dev *indio_dev);
 
 #endif /* _MS5611_H */

drivers/iio/pressure/ms5611_core.c

@@ -474,13 +474,11 @@ int ms5611_probe(struct iio_dev *indio_dev, struct device *dev,
 }
 EXPORT_SYMBOL(ms5611_probe);
 
-int ms5611_remove(struct iio_dev *indio_dev)
+void ms5611_remove(struct iio_dev *indio_dev)
 {
 	iio_device_unregister(indio_dev);
 	iio_triggered_buffer_cleanup(indio_dev);
 	ms5611_fini(indio_dev);
-
-	return 0;
 }
 EXPORT_SYMBOL(ms5611_remove);
 

drivers/iio/pressure/ms5611_i2c.c

@@ -110,7 +110,9 @@ static int ms5611_i2c_probe(struct i2c_client *client,
 
 static int ms5611_i2c_remove(struct i2c_client *client)
 {
-	return ms5611_remove(i2c_get_clientdata(client));
+	ms5611_remove(i2c_get_clientdata(client));
+
+	return 0;
 }
 
 static const struct of_device_id ms5611_i2c_matches[] = {

drivers/iio/pressure/ms5611_spi.c

@@ -112,7 +112,9 @@ static int ms5611_spi_probe(struct spi_device *spi)
 
 static int ms5611_spi_remove(struct spi_device *spi)
 {
-	return ms5611_remove(spi_get_drvdata(spi));
+	ms5611_remove(spi_get_drvdata(spi));
+
+	return 0;
 }
 
 static const struct of_device_id ms5611_spi_matches[] = {