msm: vidc: Fix iommu unmap and iommu detach order

Free any outstanding memory allocations and unmap
IOMMU before IOMMU is detached.

Change-Id: Id750db5be260cfdb07e4db013635f94bd120a755
Signed-off-by: Vinay Kalia <vkalia@codeaurora.org>
2 files changed