Fix for Null Pointer dereference

Fix for Null Pointer dereference

BZ: 34186

Matrix.c file was showing Null Pointer Dereferencecritical issue with Klockwork tool.

Change-Id: I340d7c7a84ec8dc1b9abf6edc2484fa52d0cf637
Signed-off-by: Ashish K Singh <ashish.k.singh@intel.com>
Reviewed-on: http://android.intel.com:8080/47199
Reviewed-by: Yang, Fei <fei.yang@intel.com>
Reviewed-by: Gross, Mark <mark.gross@intel.com>
Tested-by: Ng, Cheon-woei <cheon-woei.ng@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>