seemp: update to seemp_logk_set_mapping()

Updating/interchanging the code in the Lock section
to avoid memory leak in race condition
in function seemp_logk_set_mapping().

Change-Id: I93fba54444c463f18faf1a2aa8be858a29d94a1b
Signed-off-by: Naresh Maradana <nmardana@codeaurora.org>