When simulating ll/sc compute the return EPC before modifying the
registers.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index f9a6a56..77f796b 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -408,9 +408,10 @@
 
 	preempt_enable();
 
+	compute_return_epc(regs);
+
 	regs->regs[(opcode & RT) >> 16] = value;
 
-	compute_return_epc(regs);
 	return;
 
 sig:
@@ -459,9 +460,9 @@
 		goto sig;
 	}
 
+	compute_return_epc(regs);
 	regs->regs[reg] = 1;
 
-	compute_return_epc(regs);
 	return;
 
 sig: