diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c b/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c
index 2086206404..d2e53300af 100644
--- a/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c
+++ b/MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c
@@ -182,7 +182,8 @@ EhcInitSched (
                    );
 
   if (Ehc->MemPool == NULL) {
-    goto ErrorExit;
+    Status = EFI_OUT_OF_RESOURCES;
+    goto ErrorExit1;
   }
 
   Status = EhcCreateHelpQ (Ehc);
@@ -223,9 +224,6 @@ EhcInitSched (
   return EFI_SUCCESS;
 
 ErrorExit:
-  PciIo->FreeBuffer (PciIo, Pages, Buf);
-  PciIo->Unmap (PciIo, Map);
-
   if (Ehc->PeriodOne != NULL) {
     UsbHcFreeMem (Ehc->MemPool, Ehc->PeriodOne, sizeof (EHC_QH));
     Ehc->PeriodOne = NULL;
@@ -240,6 +238,11 @@ ErrorExit:
     UsbHcFreeMem (Ehc->MemPool, Ehc->ShortReadStop, sizeof (EHC_QTD));
     Ehc->ShortReadStop = NULL;
   }
+
+ErrorExit1:
+  PciIo->FreeBuffer (PciIo, Pages, Buf);
+  PciIo->Unmap (PciIo, Map);
+
   return Status;
 }
 
diff --git a/MdeModulePkg/Core/Dxe/SectionExtraction/CoreSectionExtraction.c b/MdeModulePkg/Core/Dxe/SectionExtraction/CoreSectionExtraction.c
index d9fa20daa8..7d4284057c 100644
--- a/MdeModulePkg/Core/Dxe/SectionExtraction/CoreSectionExtraction.c
+++ b/MdeModulePkg/Core/Dxe/SectionExtraction/CoreSectionExtraction.c
@@ -807,6 +807,7 @@ FindChildNode (
   CurrentChildNode = CHILD_SECTION_NODE_FROM_LINK (GetFirstNode(&SourceStream->Children));
 
   for (;;) {
+    ASSERT (CurrentChildNode != NULL);
     if (ChildIsType (SourceStream, CurrentChildNode, SearchType, SectionDefinitionGuid)) {
       //
       // The type matches, so check the instance count to see if it's the one we want
@@ -877,7 +878,6 @@ FindChildNode (
         if (EFI_ERROR (Status)) {
           return Status;
         }
-        ASSERT (CurrentChildNode != NULL);
       } else {
         ASSERT (EFI_ERROR (ErrorStatus));
         return ErrorStatus;
diff --git a/MdeModulePkg/Core/Pei/FwVol/FwVol.c b/MdeModulePkg/Core/Pei/FwVol/FwVol.c
index 6892d22a42..276b6f979f 100644
--- a/MdeModulePkg/Core/Pei/FwVol/FwVol.c
+++ b/MdeModulePkg/Core/Pei/FwVol/FwVol.c
@@ -1391,6 +1391,7 @@ FindNextCoreFvHandle (
     }
   }
 
+  ASSERT (Private->FvCount <= FixedPcdGet32 (PcdPeiCoreMaxFvSupported));
   if (Instance >= Private->FvCount) {
     return NULL;
   }
@@ -1473,7 +1474,7 @@ AddUnknownFormatFvInfo (
 {
   PEI_CORE_UNKNOW_FORMAT_FV_INFO    *NewUnknownFv;
   
-  if (PrivateData->UnknownFvInfoCount + 1 >= FixedPcdGet32 (PcdPeiCoreMaxPeimPerFv)) {
+  if (PrivateData->UnknownFvInfoCount + 1 >= FixedPcdGet32 (PcdPeiCoreMaxFvSupported)) {
     return EFI_OUT_OF_RESOURCES;
   }