As to the use of rudder when coming out of a turn it will vary from one airplane to another for instance if you attempt to come out of a turn in say a PBY by leading with aileron as in this description.
Thirdly, exit of turn
1. LOOK OUT
2. Aileron
2. Rudder
3. Yoke slightly forward (..or remove back-pressure)
4. Centralize
The airplane will yaw in the opposite direction of deflection of the aileron, however in an Airbus you do not use rudder period.
I can't remember exactly how a 172 responds to the use of the controls but as I recall leading with rudder was the best way to stop yaw......but for sure it has been a long time since I flew one.
One more comment, the angle of bank and how quickly you wish to stop the turn will make a big difference in how aggressively you apply rudder even in a 172.