fix double-free bug in variables of cinn subgraph (#40609)

paddle/fluid/framework/ir/memory_optimize_pass/share_varinfo_into_cinn_pass.cc

@@ -73,8 +73,10 @@ static void ShareVarInfoToCinnLaunch(
       varinfo_maps.at(cinn_launch_op->GetScopeIdx());
 
   // collect all MemOptVarInfos of external variables
-  // that would be eager deleted after the cinn_launch subgraph executed,
-  // and store them as attribute of the subgraph
+  // that were eager deleted after the cinn_launch subgraph executed,
+  // and we will delete them in advance among eager_deletion_ops
+  // inside cinn_launch subgraph, so store them as attribute of the subgraph
+  // to pass to the inner eager_deletion_ops.
   for (const auto& var_name : vars_to_delete) {
     auto it = src_varinfo_map.find(var_name);
     PADDLE_ENFORCE_NE(it, src_varinfo_map.end(),
@@ -82,6 +84,8 @@ static void ShareVarInfoToCinnLaunch(
                           "MemOptVarInfo of var[%s] not found", var_name));
     dst_varinfo_map.emplace(var_name, it->second);
   }
+  // skip running of the followed eager_deletion_op
+  followed_eager_deletion_op->SetSkipRunning(true);
 }
 
 static void TakeVarInfoFromMainGraph(