coverity spotted this (cid #758).  All callers dereference sfp, so we dont
need this check.  In addition to this, we dereference it earlier in the
function.
Signed-off-by: NEric Sesterhenn <snakebyte@gmx.de>
Acked-by: NDouglas Gilbert <dougg@torque.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>