fix ruff

Signed-off-by: Pavani Majety <pmajety@nvidia.com>

Author: pavanimajety

vllm/model_executor/layers/quantization/modelopt.py

@@ -236,7 +236,7 @@ def get_quant_method(
             if "vision_tower" in prefix or "vision_model" in prefix:
                 return UnquantizedLinearMethod()
             return ModelOptFp8LinearMethod(self)
-        elif isinstance(layer, Attention) or isinstance(layer, MLAAttention):
+        elif isinstance(layer, (Attention, MLAAttention)):
             return ModelOptFp8KVCacheMethod(self)
         elif isinstance(layer, FusedMoE):
             return ModelOptFp8MoEMethod(self, layer)
@@ -921,7 +921,7 @@ def get_quant_method(
             if "vision_tower" in prefix or "vision_model" in prefix:
                 return UnquantizedLinearMethod()
             return ModelOptNvFp4LinearMethod(self)
-        elif isinstance(layer, Attention) or isinstance(layer, MLAAttention):
+        elif isinstance(layer, (Attention, MLAAttention)):
             return ModelOptFp8KVCacheMethod(self)
         elif isinstance(layer, FusedMoE):
             if skip_layer: