Avoid aborting search for yields when they are still reachable, see #683

jedi/inference/value/function.py

@@ -201,15 +201,15 @@ class BaseFunctionExecutionContext(ValueContext, TreeContextMixin):
             returns = funcdef.iter_return_stmts()
 
         for r in returns:
-            check = flow_analysis.reachability_check(self, funcdef, r)
-            if check is flow_analysis.UNREACHABLE:
-                debug.dbg('Return unreachable: %s', r)
-            else:
             if check_yields:
                 value_set |= ValueSet.from_sets(
                     lazy_value.infer()
                     for lazy_value in self._get_yield_lazy_value(r)
                 )
+            else:
+                check = flow_analysis.reachability_check(self, funcdef, r)
+                if check is flow_analysis.UNREACHABLE:
+                    debug.dbg('Return unreachable: %s', r)
                 else:
                     try:
                         children = r.children

test/completion/generators.py

@@ -78,6 +78,28 @@ g = iter([1.0])
 #? float()
 next(g)
 
+x, y = Get()
+#? int() str()
+x
+#? int() str()
+x
+
+class Iter:
+    def __iter__(self):
+        yield ""
+        i = 0
+        while True:
+            v = 1
+            yield v
+            i += 1
+a, b, c = Iter()
+#? str() int()
+a
+#? str() int()
+b
+#? str() int()
+c
+
 
 # -----------------
 # __next__