File ovmf.AmdSevDxeEntryPoint.patch of Package xen

From: Olaf Hering <olaf@aepfle.de>
Date: Tue, 20 Jun 2023 18:38:50 +0000
Subject: AmdSevDxeEntryPoint
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/home/abuild/rpmbuild/BUILD/xen-4.18.20230619T122059.42473bae/non-dbg/tools/firmware/ovmf-dir-remote/OvmfPkg/AmdSevDxe/AmdSevDxe.c: In function ‘AmdSevDxeEntryPoint’:
/home/abuild/rpmbuild/BUILD/xen-4.18.20230619T122059.42473bae/non-dbg/tools/firmware/ovmf-dir-remote/OvmfPkg/AmdSevDxe/AmdSevDxe.c:358:12: error: ‘SnpBootDxeTable’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
     return gBS->InstallConfigurationTable (
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                   &gConfidentialComputingSevSnpBlobGuid,
                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                   SnpBootDxeTable
                   ~~~~~~~~~~~~~~~
                   );
                   ~

Signed-off-by: Olaf Hering <olaf@aepfle.de>
---
 OvmfPkg/AmdSevDxe/AmdSevDxe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/OvmfPkg/AmdSevDxe/AmdSevDxe.c
+++ b/OvmfPkg/AmdSevDxe/AmdSevDxe.c
@@ -193,25 +193,25 @@ STATIC EDKII_MEMORY_ACCEPT_PROTOCOL  mMemoryAcceptProtocol = {
 
 EFI_STATUS
 EFIAPI
 AmdSevDxeEntryPoint (
   IN EFI_HANDLE        ImageHandle,
   IN EFI_SYSTEM_TABLE  *SystemTable
   )
 {
   EFI_STATUS                                Status;
   EFI_GCD_MEMORY_SPACE_DESCRIPTOR           *AllDescMap;
   UINTN                                     NumEntries;
   UINTN                                     Index;
-  CONFIDENTIAL_COMPUTING_SNP_BLOB_LOCATION  *SnpBootDxeTable;
+  CONFIDENTIAL_COMPUTING_SNP_BLOB_LOCATION  *SnpBootDxeTable = NULL;
 
   //
   // Do nothing when SEV is not enabled
   //
   if (!MemEncryptSevIsEnabled ()) {
     return EFI_UNSUPPORTED;
   }
 
   //
   // Iterate through the GCD map and clear the C-bit from MMIO and NonExistent
   // memory space. The NonExistent memory space will be used for mapping the
   // MMIO space added later (eg PciRootBridge). By clearing both known MMIO and