msm: ipa4: Add checks to prevent use-after-free errors

A dangling pointer in IPA IDR structure causes use-after-free
issue. Add changes to prevent this corruption.

Change-Id: I229266b05cf6dab0c2d19e5c1e3b0883c7efcc72
Signed-off-by: Praveen Kurapati <pkurapat@codeaurora.org>
3 files changed