[RL]Fix missing is_distributed attribute (#5150)

* fix

* update

Author: bukejiyu

fastdeploy/model_executor/layers/linear.py

@@ -56,9 +56,6 @@ def create_weights(self, layer: nn.Layer, **extra_weight_attrs):
             is_bias=False,
             default_initializer=paddle.nn.initializer.Constant(0),
         )
-        split_axis = extra_weight_attrs.get("split_axis")
-        if hasattr(layer, "nranks") and layer.nranks > 0:
-            _set_var_distributed(layer.weight, split_axis=split_axis)
 
         if self.model_format == "torch" and "output_dim" in extra_weight_attrs:
             extra_weight_attrs["output_dim"] = not extra_weight_attrs["output_dim"]
@@ -882,15 +879,18 @@ def __init__(
         if add_bias:
             assert with_bias, "with_bias must be True when add_bias is True."
         assert self.quant_method is not None
-        self.quant_method.create_weights(
-            self,
-            split_axis=0,
+        create_weight_kwargs = dict(
+            layer=self,
             output_dim=None if self.split_token else False,
             weight_loader=(
                 self.weight_loader if hasattr(self, "weight_loader") else default_weight_loader(self.fd_config)
             ),
             model_format=fd_config.model_config.model_format,
         )
+        if self.nranks > 0:
+            create_weight_kwargs["split_axis"] = 0
+            create_weight_kwargs["is_distributed"] = True
+        self.quant_method.create_weights(**create_weight_kwargs)
 
         self.reduce_results = reduce_results