iio:dac:m62332: shutdown on remove

The regulator framework requests to balance regulator_enable() calls with
regulator_disable() calls. To meet this requirement, set channels to 0 on
remove, which implies a regulator_disable() call in case that channel was
enabled.

Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/iio/dac/m62332.c

@@ -243,6 +243,8 @@ static int m62332_remove(struct i2c_client *client)
 
 	iio_device_unregister(indio_dev);
 	iio_map_array_unregister(indio_dev);
+	m62332_set_value(indio_dev, 0, 0);
+	m62332_set_value(indio_dev, 0, 1);
 
 	return 0;
 }