msm: camera: cdm: Fix component unbind failures in cdm hw

In cdm hw unbind, smmu handle is destroyed before handler is
unset. Also, mutex unlock is unbalanced during error case. Fix
invalid unset handler call and unbalanced mutex in component
unbind for hw cdm.

CRs-Fixed: 2584631
Change-Id: I8e117ce9623ba631d9457ef851b8f271591091b6
Signed-off-by: Mukund Madhusudan Atre <matre@codeaurora.org>