Added reference count for contex map indicate memory under used in remote call. And, this memory would not removed in internal unmap to avoid UAF. Change-Id: Ieb4ff6b298ff9c48953bc5b3539fdfe19a14b442 Acked-by: DEEPAK SANNAPAREDDY <sdeeredd@qti.qualcomm.com> Signed-off-by: Vamsi Krishna Gattupalli <quic_vgattupa@quicinc.com>