ASoC: audio: fix unlock Null pointer issue
ASoC: audio: fix unlock Null pointer issue

-In afe_open, trying to unlock mutex on variable
that is already freed.
-correct the sequence by unlock mutex first then
free the variable.

CRs-Fixed: 423196
Change-Id: If7df0e0f46c7d16843c6d52ae821974cc74539ff
Signed-off-by: Laxminath Kasam <90195ac9894f0ae655ee806f40ff2ab15e49efdd@codeaurora.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas