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.
Do not worry and do not grieve; nothing will result because of this error. Allah Says (what means): {And there is no blame upon you for that in which you have erred but [only for] what your hearts intended.} [Quran 33:5]
Therefore, do not think about this mistake and strive to supplicate Allah asking any goodness you wish.
Allah Knows best.