drm/msm: fix double struct_mutex acquire
authorRob Clark <robdclark@gmail.com>
Sat, 28 Jun 2014 15:11:34 +0000 (11:11 -0400)
committerRob Clark <robdclark@gmail.com>
Mon, 4 Aug 2014 15:55:27 +0000 (11:55 -0400)
Mutex is already grabbed in show_locked().. somehow this slipped
through.

Signed-off-by: Rob Clark <robdclark@gmail.com>

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