[SCSI] lpfc: check before dereference in lpfc_ct.c

If we fail to allocate mp->virt during the first while loop iteration,
mlist is still uninitialized, therefore we should check if before
dereferencing.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Acked-by: James Smart <James.Smart@Emulex.Com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c
index 1b53afb1cb5..3add7c23785 100644
--- a/drivers/scsi/lpfc/lpfc_ct.c
+++ b/drivers/scsi/lpfc/lpfc_ct.c
@@ -188,7 +188,8 @@ lpfc_alloc_ct_rsp(struct lpfc_hba * phba, int cmdcode, struct ulp_bde64 * bpl,
 
                 if (!mp->virt) {
                         kfree(mp);
-                        lpfc_free_ct_rsp(phba, mlist);
+                        if (mlist)
+                                lpfc_free_ct_rsp(phba, mlist);
                         return NULL;
                 }