[PATCH 4.4 50/73] mtd: maps: sa1100-flash: potential NULL dereference

[Greg Kroah-Hartman]

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpen...@oracle.com>

commit dc01a28d80a42cef08c94dfc595565aaebe46d15 upstream.

We check for NULL but then dereference "info->mtd" on the next line.

Fixes: 72169755cf36 ('mtd: maps: sa1100-flash: show parent device in sysfs')
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
Signed-off-by: Brian Norris <computersforpe...@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/mtd/maps/sa1100-flash.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/mtd/maps/sa1100-flash.c
+++ b/drivers/mtd/maps/sa1100-flash.c
@@ -230,8 +230,10 @@ static struct sa_info *sa1100_setup_mtd(
 
                info->mtd = mtd_concat_create(cdev, info->num_subdev,
                                              plat->name);
-               if (info->mtd == NULL)
+               if (info->mtd == NULL) {
                        ret = -ENXIO;
+                       goto err;
+               }
        }
        info->mtd->dev.parent = &pdev->dev;