All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
If a person performs Ghusl (ritual bath) and intends to perform the Ghusl with Wudu (ablution), and performs Ghusl with this intention, then it is sufficient for him; i.e., he does not need to perform ablution after Ghusl.
However, it is better to perform Wudu and then perform Ghusl as the Prophet used to do.
Allah knows best.