MdeModulePkg/SdMmc: Add break to avoid dead loop when polling OCR Reg

At worst case, OCR register may always not set BIT31. It will cause
original code enter to dead loop. Adding a break for such case.

Cc: Hao Wu <hao.a.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Hao Wu <hao.a.wu@intel.com>

MdeModulePkg/Bus/Sd/SdBlockIoPei/SdHci.c

@@ -2754,7 +2754,7 @@ SdPeimIdentification (
   UINT32                         PresentState;
   UINT8                          HostCtrl2;
   SD_HC_SLOT_CAP                 Capability;
-
+  UINTN                          Retry;
   //
   // 1. Send Cmd0 to the device
   //
@@ -2842,12 +2842,20 @@ SdPeimIdentification (
   //    Note here we only support the cards complied with SD physical
   //    layer simplified spec version 2.0 and version 3.0 and above.
   //
+  Ocr   = 0;
+  Retry = 0;
   do {
     Status = SdPeimSendOpCond (Slot, 0, Ocr, S18r, Xpc, TRUE, &Ocr);
     if (EFI_ERROR (Status)) {
       DEBUG ((EFI_D_ERROR, "SdPeimIdentification: SdPeimSendOpCond fails with %r Ocr %x, S18r %x, Xpc %x\n", Status, Ocr, S18r, Xpc));
       return EFI_DEVICE_ERROR;
     }
+
+    if (Retry++ == 100) {
+      DEBUG ((EFI_D_ERROR, "SdPeimIdentification: SdPeimSendOpCond fails too many times\n"));
+      return EFI_DEVICE_ERROR;
+    }
+    MicroSecondDelay (10 * 1000);
   } while ((Ocr & BIT31) == 0);
 
   //