Swap content in try except block for a more logical flow

multiarea_model/simulation.py

@@ -312,9 +312,9 @@ class Simulation:
         Use NEST's memory wrapper function to record used memory.
         """
         try:
-            mem = nest.sli_func('memory_thisjob')
-        except AttributeError:
             mem = nest.ll_api.sli_func('memory_thisjob')
+        except AttributeError:
+            mem = nest.sli_func('memory_thisjob')
         if isinstance(mem, dict):
             return mem['heap']
         else: