msm: ipa4: Fix using of tag_desc

While sending imm cmd to close the coal pipe,
we program desc to close the frame instead of tag_desc.
This lead to memory corruption. Add changes to use
tag_desc.

Change-Id: I10e9f50f48a14cc77f5032e297996f7e162517b2
Signed-off-by: Praveen Kurapati <pkurapat@codeaurora.org>