Fix code (if not found should not have been nest into the for loop) + simplify logic

openpype/hosts/max/api/lib_rendersettings.py

@@ -37,13 +37,10 @@ class RenderSettings(object):
     def set_render_camera(self, selection):
         for sel in selection:
             # to avoid Attribute Error from pymxs wrapper
-            found = False
             if rt.classOf(sel) in rt.Camera.classes:
-                found = True
                 rt.viewport.setCamera(sel)
-                break
-            if not found:
-                raise RuntimeError("Active Camera not found")
+                return
+        raise RuntimeError("Active Camera not found")
 
     def render_output(self, container):
         folder = rt.maxFilePath