[Orc] Fix error handling in ORCPlatformSupport::initialize (#144637)

Previously, `result` was checked before handling the `Error` returned by
`callSPSWrapper`. If `Error` was `success` but `result` indicated
failure, the original `Error` was silently dropped, triggering an
assertion failure for unhandled `Error`.

This patch ensures the `Error` is checked and returned before inspecting
`result`, preventing assertion failures.

Co-authored-by: Anutosh Bhat <andersonbhat491@gmail.com>

Author: SahilPatidar

llvm/lib/ExecutionEngine/Orc/LLJIT.cpp

@@ -632,16 +632,19 @@ Error ORCPlatformSupport::initialize(orc::JITDylib &JD) {
       int32_t result;
       auto E = ES.callSPSWrapper<SPSDLUpdateSig>(WrapperAddr->getAddress(),
                                                  result, DSOHandles[&JD]);
-      if (result)
+      if (E)
+        return E;
+      else if (result)
         return make_error<StringError>("dlupdate failed",
                                        inconvertibleErrorCode());
-      return E;
-    }
-    return ES.callSPSWrapper<SPSDLOpenSig>(WrapperAddr->getAddress(),
-                                           DSOHandles[&JD], JD.getName(),
-                                           int32_t(ORC_RT_RTLD_LAZY));
+    } else
+      return ES.callSPSWrapper<SPSDLOpenSig>(WrapperAddr->getAddress(),
+                                             DSOHandles[&JD], JD.getName(),
+                                             int32_t(ORC_RT_RTLD_LAZY));
   } else
     return WrapperAddr.takeError();
+
+  return Error::success();
 }
 
 Error ORCPlatformSupport::deinitialize(orc::JITDylib &JD) {