fix ep error

Author: zoooo0820

fastdeploy/model_executor/layers/moe/ep.py

@@ -508,7 +508,7 @@ def moe_select(self, layer: nn.Layer, gate_out: paddle.Tensor):
                     expert_in_rank_num_list=expert_in_rank_num_list,
                     tokens_per_expert_stats_list=tokens_per_expert_stats_list,
                     redundant_ep_rank_num_plus_one=layer.fd_config.eplb_config.redundant_experts_num + 1,
-                    topk_reduce_func=layer.topk_reduce_func,
+                    topk_reduce_func=getattr(layer, "topk_reduce_func", None),
                 )
             else:
                 topk_idx, topk_weights = fastdeploy.model_executor.ops.gpu.moe_redundant_topk_select(
@@ -534,7 +534,7 @@ def moe_select(self, layer: nn.Layer, gate_out: paddle.Tensor):
                     layer.routed_scaling_factor,
                     layer.gate_correction_bias,
                     getattr(layer, "renormalize", True),
-                    topk_reduce_func=layer.topk_reduce_func,
+                    topk_reduce_func=getattr(layer, "topk_reduce_func", None),
                 )
             else:
                 topk_idx, topk_weights = fastdeploy.model_executor.ops.gpu.moe_topk_select(