Which is correct between "Dawud ibn Ata' al-Madini" and "Dawud ibn Ata' al-Madani," and is there a difference between them?

As for Dawud ibn Sulayman, he is mentioned in the books of Rijal (biographies of narrators) as al-Madani, and in some of them as al-Madini. There is no contradiction between the two نسب (attributions), for the attribution to the Prophet's City (Medina) can be expressed as Madani, which is more common, and also as Madini.