Index: ntoskrnl/io/pnpmgr/pnpmgr.c
===================================================================
--- ntoskrnl/io/pnpmgr/pnpmgr.c	(revision 73854)
+++ ntoskrnl/io/pnpmgr/pnpmgr.c	(working copy)
@@ -978,9 +978,8 @@
        NewList = ExAllocatePool(PagedPool, NewSize);
 
        if (!NewList) {
-       /* Fail */
-       ExFreePool(PnpBusTypeGuidList);
-       goto Quickie;
+           /* Fail */
+           goto Quickie;
        }
 
        /* Now copy them, decrease the size too */
@@ -1005,6 +1004,12 @@
 
 Quickie:
    ExReleaseFastMutex(&PnpBusTypeGuidList->Lock);
+
+   if (!NewList) {
+       /* Clean up */
+       ExFreePool(PnpBusTypeGuidList);
+   }
+
    return FoundIndex;
 }