[PATCH] scsi: hpsa: Fix pointer dereferenced before checking

[Haowen Bai]

The dev->raid_map is dereferencing before null checking, so move
 it after checking.

Signed-off-by: Haowen Bai <baihaowen@xxxxxxxxx>
---
 drivers/scsi/hpsa.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index a47bcce3c9c7..fa785f60b1e6 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -5104,7 +5104,7 @@ static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h,
 {
 	struct scsi_cmnd *cmd = c->scsi_cmd;
 	struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
-	struct raid_map_data *map = &dev->raid_map;
+	struct raid_map_data *map;
 	struct raid_map_disk_data *dd = &map->data[0];
 	int is_write = 0;
 	u32 map_index;
@@ -5137,6 +5137,8 @@ static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h,
 	if (!dev)
 		return -1;
 
+	map = &dev->raid_map;
+
 	if (dev->in_reset)
 		return -1;
 
-- 
2.7.4