AMSTERDAM, May 12 (Reuters) - Dutch bank ABN Amro on Wednesday reported a net loss of 54 million euros ($66 million) over the first three months of 2021, as a hefty fine for money laundering outweighed the positive effects of economic recovery in the Netherlands. ABN Amro last month agreed to pay 480 million euros to Dutch prosecutors to settle a criminal investigation into its lax oversight of money laundering going on through its accounts.