tmiofb: missing NULL pointer checks

Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=44471
Reported-by: <rucsoftsec@gmail.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
1 file changed