How to avoid cyclic calls from a flow?

There are 4 classes as mentioned below -

• class A having 2 methods f1() and f2().
• class B having method f3().
• class C having method f4().
• class D having method f5().

Now the following is true about the above classes -

1. f1() calls f3().
2. f3() calls f4().
3. f4() calls f5().
4. f5() calls f2().

Is it a bad design? If yes, how can this design be improved??