msm: camera: cdm: Acquire mutex lock before accessing client data

BugLink: https://bugs.launchpad.net/bugs/1952845



There is a chance of use after release of client data in
cdm internal operation calls. Hence acquire mutex lock whenever
accessing client data to avoid use after release scenario.

CRs-Fixed: 3010261
Change-Id: I6268a0c9577a4f3df0cabbff648c525f82194ee2
Signed-off-by: Shravya Samala <shravyas@codeaurora.org>
(cherry picked from commit 95eacf1a37b290b1f3fe20b0c628c1e984a643d6)
Signed-off-by: Shrirang Bagul <shrirang.bagul@canonical.com>