The function cam_mem_mgr_release can unmap the buffers when in use.
This change prevents unmapping the buffers when in use.
CRs-Fixed: 3489559
Change-Id: I2e72e795d39ac15abfa56c19043c419a03686966
Signed-off-by: Shivakumar Malke <quic_smalke@quicinc.com>