lirc: rc_dev_get_from_fd(): fix file leak

[ Upstream commit bba1f6758a9ec90c1adac5dcf78f8a15f1bad65b ]

missing fdput() on a failure exit

Fixes: 6a9d5524 "media: rc: bpf attach/detach requires write permission" # v6.9
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>