Fix add for a MISRA violation Rule 17.7 The return value of a non-void function is unused. Jira NVGPU-3227 Change-Id: Ia904340f2849066fb2a59571c1404c4a4a79ff4a Signed-off-by: Vinod G <vinodg@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2113175 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>