From 2d3d9e1ab8b5693d4f99e2935a42439ed9da1ebd Mon Sep 17 00:00:00 2001
From: Zhiguang Liu <zhiguang.liu@intel.com>
Date: Wed, 24 Apr 2024 15:27:20 +0800
Subject: [PATCH] [Cherry-Pick] StandaloneMmPkg: Initialize 'WillReturn'
 variable

The local variable 'WillReturn' was being used without prior
initialization in some code paths.
This patch ensures that 'WillReturn' is properly initialized
to prevent undefined behavior.

Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>
---
 StandaloneMmPkg/Core/Mmi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/StandaloneMmPkg/Core/Mmi.c b/StandaloneMmPkg/Core/Mmi.c
index e035245c87..fb205df490 100644
--- a/StandaloneMmPkg/Core/Mmi.c
+++ b/StandaloneMmPkg/Core/Mmi.c
@@ -174,6 +174,7 @@ MmiManage (
   EFI_STATUS   Status;
 
   mMmiManageCallingDepth++;
+  WillReturn   = FALSE;
   Status       = EFI_NOT_FOUND;
   ReturnStatus = Status;
   if (HandlerType == NULL) {