[PATCH] Bluetooth: btmtk: Add missing usb_free_urb()

[Chen Ni]

Add missing usb_free_urb() on failure path after usb_alloc_urb().

Fixes: ceac1cb0259d ("Bluetooth: btusb: mediatek: add ISO data transmission functions")
Signed-off-by: Chen Ni <nichen at iscas.ac.cn>
---
 drivers/bluetooth/btmtk.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c
index 4390fd571dbd..a95b1074ad36 100644
--- a/drivers/bluetooth/btmtk.c
+++ b/drivers/bluetooth/btmtk.c
@@ -1043,8 +1043,10 @@ struct urb *alloc_mtk_intr_urb(struct hci_dev *hdev, struct sk_buff *skb,
 	if (!urb)
 		return ERR_PTR(-ENOMEM);
 
-	if (btmtk_isopkt_pad(hdev, skb))
+	if (btmtk_isopkt_pad(hdev, skb)) {
+		usb_free_urb(urb);
 		return ERR_PTR(-EINVAL);
+	}
 
 	pipe = usb_sndintpipe(btmtk_data->udev,
 			      btmtk_data->isopkt_tx_ep->bEndpointAddress);
-- 
2.25.1