ASoC: msm: unmap before freeing ion memory
ASoC: msm: unmap before freeing ion memory

ION memory when kernel mapped maintains a ref count.
ion_unmap_kernel() should be called by clients before
freeing ion memory so that kernel ref count is
decremented correctly.

Change-Id: Ie118ae9e355d735c3c0a40ce30883efb1c61af46
Signed-off-by: Shiv Maliyappanahalli <ac787d8f09a6823214d7ee5f9172cecd4adaf7cb@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