[media] ngene: remove an unneeded condition

"stat" is always zero here.  The condition used to be needed, but we
shifted stuff around in 0f0b270f "[media] ngene: CXD2099AR Common
Interface driver".

This doesn't change how the code works, it's just a bit tidier.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>