msm: camera: ope: Fix false alarm for OPE HW timeout

Resetting the timer before setting the respective request bit
in bitmap to avoid flase alarm in case of timer timeout.

CRs-Fixed: 2592991
Change-Id: I5afed26dea7ebfb9371a43323815d45cd37a6384
Signed-off-by: Rishabh Jain <risjai@codeaurora.org>