media: i2c: hi846: Fix V4L2_SUBDEV_FORMAT_TRY get_selection()

media: i2c: hi846: Fix V4L2_SUBDEV_FORMAT_TRY get_selection()

The current code does not return anything to the user.

Although the code looks a bit dangerous (using a pointer without
checking if it is valid), it should be fine. The core validates that
sel->pad has a valid value.

Fix the following smatch error:
drivers/media/i2c/hi846.c:1854 hi846_get_selection() warn: statement has no effect 31

Fixes: e8c0882685f9 ("media: i2c: add driver for the SK Hynix Hi-846 8M pixel camera")
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[Sakari Ailus: code -> core.]
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>