According to the UEFI spec, EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL.GetNextNamespace() should return EFI_NOT_FOUND when the value pointed to by NamespaceId is the namespace ID of the last namespace on the NVM Express controller. This commit modifies the check for NamespaceId to follow this rule. Cc: Feng Tian <feng.tian@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Hao Wu <hao.a.wu@intel.com> Reviewed-by: Feng Tian <feng.tian@intel.com>