Bluetooth: btusb: Fix memory leak in Intel setup routine

The SKB returned from the Intel specific version information command is
missing a kfree_skb.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Cc: stable@vger.kernel.org
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index c956250..7f936db 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -1616,6 +1616,8 @@
 	}
 	fw_ptr = fw->data;
 
+	kfree_skb(skb);
+
 	/* This Intel specific command enables the manufacturer mode of the
 	 * controller.
 	 *