[MIPS] Fix double signal on trap and break instruction

This commit broke gdb, since any BREAK or TRAP instruction cause SIGSEGV.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index f663c63..2aa208b 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -704,6 +704,7 @@
 		die_if_kernel("Break instruction in kernel code", regs);
 		force_sig(SIGTRAP, current);
 	}
+	return;
 
 out_sigsegv:
 	force_sig(SIGSEGV, current);
@@ -747,6 +748,7 @@
 		die_if_kernel("Trap instruction in kernel code", regs);
 		force_sig(SIGTRAP, current);
 	}
+	return;
 
 out_sigsegv:
 	force_sig(SIGSEGV, current);