alpha: syscall exit cleanup

$ret_success consists of two insn + branch to ret_from_syscall.
The thing is, those insns are identical to the ones immediately
preceding ret_from_syscall...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

arch/alpha/kernel/entry.S

@@ -478,6 +478,7 @@ entSys:
 1:	jsr	$26, ($27), sys_ni_syscall
 	ldgp	$gp, 0($26)
 	blt	$0, $syscall_error	/* the call failed */
+$ret_success:
 	stq	$0, 0($sp)
 	stq	$31, 72($sp)		/* a3=0 => no error */
 
@@ -527,11 +528,6 @@ $syscall_error:
 	stq	$1, 72($sp)	/* a3 for return */
 	br	ret_from_sys_call
 
-$ret_success:
-	stq	$0, 0($sp)
-	stq	$31, 72($sp)	/* a3=0 => no error */
-	br	ret_from_sys_call
-
 /*
  * Do all cleanup when returning from all interrupts and system calls.
  *