[ROCm] Improve error handling while loading quantized model on gfx120… (#31715)

Signed-off-by: brian033 <85883730+brian033@users.noreply.github.com>
Co-authored-by: TJian <tunjian.tan@embeddedllm.com>

vllm/model_executor/layers/quantization/quark/schemes/quark_ocp_mx.py

@@ -153,7 +153,11 @@ try:
         fake_impl=gemm_with_dynamic_quant_fake,
         dispatch_key=current_platform.dispatch_key,
     )
-except (ImportError, AttributeError):
+except (ImportError, AttributeError, RuntimeError):
+    logger.warning(
+        "AITER is not found or QuarkOCP_MX is not supported on the current "
+        "platform. QuarkOCP_MX quantization will not be available."
+    )
     dynamic_mxfp4_quant = gemm_afp4wfp4 = None