isdn: hisax: add missing usb_free_urb

Add missing usb_free_urb() on failure path in st5481_setup_usb().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Marina Makienko <makienko@ispras.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 2 deletions

diff --git a/drivers/isdn/hisax/st5481_usb.c b/drivers/isdn/hisax/st5481_usb.c
index 017c67ea3f4..ead0a4fb744 100644
--- a/drivers/isdn/hisax/st5481_usb.c
+++ b/drivers/isdn/hisax/st5481_usb.c
@@ -294,13 +294,13 @@ int st5481_setup_usb(struct st5481_adapter *adapter)
         // Allocate URBs and buffers for interrupt endpoint
         urb = usb_alloc_urb(0, GFP_KERNEL);
         if (!urb) {
-                return -ENOMEM;
+                goto err1;
         }
         intr->urb = urb;
 
         buf = kmalloc(INT_PKT_SIZE, GFP_KERNEL);
         if (!buf) {
-                return -ENOMEM;
+                goto err2;
         }
 
         endpoint = &altsetting->endpoint[EP_INT-1];
@@ -313,6 +313,14 @@ int st5481_setup_usb(struct st5481_adapter *adapter)
                          endpoint->desc.bInterval);
 
         return 0;
+err2:
+        usb_free_urb(intr->urb);
+        intr->urb = NULL;
+err1:
+        usb_free_urb(ctrl->urb);
+        ctrl->urb = NULL;
+
+        return -ENOMEM;
 }
 
 /*