This patch fixes a bug in SNP driver that the Cdb.StatCode should be check with PXE_STATCODE_SUCCESS instead of EFI_SUCCESS. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Fu Siyuan <siyuan.fu@intel.com> Reviewed-by: Jiaxin Wu <jiaxin.wu@intel.com> Reviewed-by: Ye Ting <ting.ye@intel.com>