ASoc: msm: Update platform drivers to correctly access audio_client

Update platform driver open function call to access
audio_client pointer only after allocation to avoid crash.

Signed-off-by: SathishKumar Mani <smani@codeaurora.org>

Conflicts:
	sound/soc/msm/msm-compr-q6.c

Change-Id: I735e2af9067f3507927c83e2da108d5a65107740
Merge "ASoc: msm: Update platform drivers to correctly access audio_client" into jb4.2