CHROMIUM: qcusbnet: don't leak clients_lock

drivers/net/usb/gobi/qmidevice.c

 /* qmidevice.c - gobi QMI device
  * Copyright (c) 2010, Code Aurora Forum. All rights reserved.
 
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
  * only version 2 as published by the Free Software Foundation.
 
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
@@ skipping 1359 matching lines @@
 
                 write_sync(dev, wbuf, wbufsize, QMICTL);
 
                 msleep(100);
                 if (!down_trylock(&sem)) {
                         spin_lock_irqsave(&dev->qmi.clients_lock, flags);
                         if (client_delread(dev, QMICTL, tid, &rbuf, &rbufsize)) {
                                 spin_unlock_irqrestore(&dev->qmi.clients_lock, flags);
                                 kfree(rbuf);
                                 break;
+                        } else {
+                                spin_unlock_irqrestore(&dev->qmi.clients_lock, flags);
                         }
                 } else {
                         spin_lock_irqsave(&dev->qmi.clients_lock, flags);
                         client_notify(dev, QMICTL, tid);
                         spin_unlock_irqrestore(&dev->qmi.clients_lock, flags);
                 }
         }
 
         kfree(wbuf);
 
@@ skipping 193 matching lines @@
                 DBG("bad get MEID resp\n");
                 memset(&dev->meid[0], '0', 14);
         }
 
         client_free(dev, cid);
         return 0;
 }
 
 module_param(qcusbnet2k_fwdelay, int, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(qcusbnet2k_fwdelay, "Delay for old firmware");