media: v4l2-compat-ioctl32.c: don't copy back the result for certain errors

media: v4l2-compat-ioctl32.c: don't copy back the result for certain errors

commit d83a8243aaefe62ace433e4384a4f077bed86acb upstream.

Some ioctls need to copy back the result even if the ioctl returned
an error. However, don't do this for the error code -ENOTTY.
It makes no sense in that cases.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[sw0312.kim: cherry-pick from linux-3.18.y to apply CVE patch]
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Change-Id: I1454b74c7f56e73bef2349528d68d15927fba359