[PATCH] drivers/scsi/dpt_i2o.c: fix a NULL pointer dereference

The Coverity checker spotted this obvious NULL pointer dereference.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Mark Salyzyn <mark_salyzyn@adaptec.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>