No one really knows what possessed the Umayyads to send troops to Hipsania in the first place, so depending on what their goals are would largely determine whether or not they would come for Round.
My understanding is that the conquest was opportunististic and authorised by the Caliph of Damascus. If the Moslems had received a bloody nose at the outset they would have backed off for a while or at least just raided. Instead they turned up at the time of a civil war between Roderic the Duke of Toledo and the nobles of the Vascones region.
Had the Visigoths been united they could very well have seen off the first Moslem invasion. However,as Lalli stated they were undergoing a process of Latinization both in language and religion. You would thus get a people like the modern Spaniard albeit without the brutal fighting of the Reconquista.
Moving forward sporadic skirmishing between the Visigoths and the Moslems would continue until the beginning of the Modern Era where Spain would have been in a position to take Western technology to the New World. What you would not have had would have been Portugal and thus one Iberian country going eastwards so to speak and the other west.
How this would have played out is obviously speculative. There would have been the drive to outflank the Moslems' and Venetians' control of the spice trade. One could thus see Visigoths taking control of large part of Inian along with the East Indies leaving the English, French and Dutch the entire Americas.