ASoC: msm: Add missing mutex_unlock for error condition failure cases

- mutex_unlock is missing with some error condition failure cases
  which could cause watchdog bark issues.
- Add missing mutex_unlock.

Change-Id: Iceb594462174141449b2f979fbf86a3ab81c45aa
Signed-off-by: Jayasena Sangaraboina <jsanga@codeaurora.org>
1 file changed