x86: signal_64.c: make handle_signal() similar

Make handle_signal() same as 32bit.

No change in functionality intended.
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/signal_64.c

@@ -338,7 +338,9 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
 
 	ret = setup_rt_frame(sig, ka, info, oldset, regs);
 
-	if (ret == 0) {
+	if (ret)
+		return ret;
+
 	/*
 	 * This has nothing to do with segment registers,
 	 * despite the name.  This magic affects uaccess.h
@@ -368,9 +370,8 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
 
 	tracehook_signal_handler(sig, info, ka, regs,
 				 test_thread_flag(TIF_SINGLESTEP));
-	}
 
-	return ret;
+	return 0;
 }
 
 #define NR_restart_syscall	\