UAS: Free status URB when we can't find the SCSI tag.

In the UAS status URB completion handler, we need to free the URB, no
matter what happens.  Fix a bug where we would leak the URB (and its
buffer) if we couldn't find a SCSI command that is associated with this
status phase.

Signed-off-by: Sarah Sharp <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Signed-off-by: Sebastian Andrzej Siewior <[email protected]>

Author: Sarah Sharp

drivers/usb/storage/uas.c

@@ -246,8 +246,10 @@ static void uas_stat_cmplt(struct urb *urb)
 		cmnd = sdev->current_cmnd;
 	else
 		cmnd = scsi_find_tag(sdev, tag);
-	if (!cmnd)
+	if (!cmnd) {
+		usb_free_urb(urb);
 		return;
+	}
 
 	switch (iu->iu_id) {
 	case IU_ID_STATUS: