Avoid querying inactive NVLink versions (#2154)

Author: rwgk

cuda_core/tests/system/test_system_device.py

@@ -772,16 +772,19 @@ def test_nvlink():
                 nvlink_info = device.get_nvlink(link)
             assert isinstance(nvlink_info, _device.NvlinkInfo)
 
+            with unsupported_before(device, None):
+                state = nvlink_info.state
+            assert isinstance(state, bool)
+
+            if not state:
+                continue
+
             with unsupported_before(device, None):
                 version = nvlink_info.version
             assert isinstance(version, tuple)
             assert len(version) == 2
             assert all(isinstance(i, int) for i in version)
 
-            with unsupported_before(device, None):
-                state = nvlink_info.state
-            assert isinstance(state, bool)
-
 
 def test_utilization():
     for device in system.Device.get_all_devices():