We don't call the remove() function unless probe() succeeds so "oud"
can't be NULL here.  Plus, if it were NULL, we dereference it on the
next line so it would crash anyway.

[mkp: applied by hand]
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NBoaz Harrosh <ooo@electrozaur.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>