From fc0ae24386142299db14dfea7f32a20022d94d90 Mon Sep 17 00:00:00 2001
From: "Mark A. Greer" <mgreer@animalcreek.com>
Date: Tue, 23 Sep 2014 11:25:48 -0700
Subject: [PATCH] NFC: trf7970a: Unlock mutex before exiting
 _trf7970a_tg_listen()

The recently added _trf7970a_tg_listen() routine
has some return paths that don't unlock the mutex
that is locked when the routine is entered.  Fix
this by always unlocking the mutex before returning.

Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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