[Patch] MdeModulePkg PiSmmCore: Update comments in InitializeMemoryServices

[Liming Gao <liming.gao@intel.com>]

Add the comments to describe Free and Allocated SMRAM are added separately.

Cc: Star Zeng <star.zeng@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Liming Gao <liming.gao@intel.com>
---
 MdeModulePkg/Core/PiSmmCore/Pool.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/MdeModulePkg/Core/PiSmmCore/Pool.c b/MdeModulePkg/Core/PiSmmCore/Pool.c
index dcfd13e..b638aad 100644
--- a/MdeModulePkg/Core/PiSmmCore/Pool.c
+++ b/MdeModulePkg/Core/PiSmmCore/Pool.c
@@ -85,8 +85,7 @@ SmmInitializeMemoryServices (
     SmramRanges[CurrentSmramRangesIndex].PhysicalSize = SmramRanges[CurrentSmramRangesIndex].PhysicalSize - SmmCodeSize;
   }
   //
-  // Initialize free SMRAM regions
-  // Need add Free memory at first, to let gSmmMemoryMap record data
+  // Add Free SMRAM regions
   //
   for (Index = 0; Index < SmramRangeCount; Index++) {
     if ((SmramRanges[Index].RegionState & (EFI_ALLOCATED | EFI_NEEDS_TESTING | EFI_NEEDS_ECC_INITIALIZATION)) != 0) {
@@ -100,6 +99,9 @@ SmmInitializeMemoryServices (
       );
   }
 
+  //
+  // Add the allocated SMRAM regions
+  //
   for (Index = 0; Index < SmramRangeCount; Index++) {
     if ((SmramRanges[Index].RegionState & (EFI_ALLOCATED | EFI_NEEDS_TESTING | EFI_NEEDS_ECC_INITIALIZATION)) == 0) {
       continue;
-- 
2.8.0.windows.1