[media] cx231xx: dereferencing NULL after allocation failure

"dev" is NULL here so we should use "nr" instead of "dev->devno".

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/cx231xx/cx231xx-cards.c b/drivers/media/video/cx231xx/cx231xx-cards.c
index 627829f4d8c96e40b83a085e217dadabc4029b22..7d8edb4570655057252e82007dbda809b2f6a6e6 100644 (file)
--- a/drivers/media/video/cx231xx/cx231xx-cards.c
+++ b/drivers/media/video/cx231xx/cx231xx-cards.c
@@ -1052,7 +1052,7 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
        if (dev == NULL) {
                cx231xx_err(DRIVER_NAME ": out of memory!\n");
-               clear_bit(dev->devno, &cx231xx_devused);
+               clear_bit(nr, &cx231xx_devused);
                return -ENOMEM;
        }