msm: ipa: Fix to use after free issue

Added code changes to avoid use after free
if header already table already freed
during ipa ioctl test.

Change-Id: Idc5c57a5aa896d4af0c76cc49fd964f236229711
Acked-by: Pooja Kumari <kumarip@qti.qualcomm.com>
Signed-off-by: Mohammed Javid <mjavid@codeaurora.org>