ASoC: msm: update dev free call after io_unmap

Platform dev data is freed before iounmap for
iomem registers is done. This can result in
freeing of non-existent memory. Fix it by
calling free of platform dev data after iounmap
calls to iomem registers.

Change-Id: I7c399c46918472ebb4867daeb4735c625fe01f7d
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>