Coverity Bug Fix for cnos_vrf.py (#55954)

* Coverity Bug Fix for cnos_vrf.py

* Update cnos_vrf.py

lib/ansible/modules/network/cnos/cnos_vrf.py

@@ -228,8 +228,7 @@ def map_obj_to_commands(updates, module):
 def map_config_to_obj(module):
     objs = []
     output = run_commands(module, {'command': 'show vrf'})
-    if output is None:
-        module.fail_json(msg='Could not fetch VRF details from device')
+    if output is not None:
         vrfText = output[0].strip()
         vrfList = vrfText.split('VRF')
         for vrfItem in vrfList:
@@ -248,7 +247,8 @@ def map_config_to_obj(module):
                         if '!' not in intName and 'Interfaces' not in intName:
                             obj['interfaces'].append(intName.strip().lower())
                 objs.append(obj)
-
+    else:
+        module.fail_json(msg='Could not fetch VRF details from device')
     return objs