Spanish Prime Minister Mariano Rajoy’s proposal to force banks to recognize further losses from real estate holdings may backfire by saddling healthy lenders with the bill. “The plan is for a massive effort in provisioning of real estate and consolidation, and that has to be paid for,” said Daragh Quinn, a Madrid-based analyst at Nomura International. By refusing to use public funds to help purge a system burdened with 176 billion euros ($228 billion) of what the Bank of Spain calls “troubled” assets linked to real estate, Rajoy may not do...