[SCSI] lpfc: fix potential NULL pointer dereference in lpfc_sli4_rq_put()
The dereference to 'put_index' should be moved below the NULL test.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 74b67d9..d43faf3 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -438,11 +438,12 @@
struct lpfc_rqe *temp_hrqe;
struct lpfc_rqe *temp_drqe;
struct lpfc_register doorbell;
- int put_index = hq->host_index;
+ int put_index;
/* sanity check on queue memory */
if (unlikely(!hq) || unlikely(!dq))
return -ENOMEM;
+ put_index = hq->host_index;
temp_hrqe = hq->qe[hq->host_index].rqe;
temp_drqe = dq->qe[dq->host_index].rqe;