serial: sh-sci: Shut up compiler warning for SH-X3 SCIF.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/drivers/serial/sh-sci.h b/drivers/serial/sh-sci.h
index cf75466..941c504 100644
--- a/drivers/serial/sh-sci.h
+++ b/drivers/serial/sh-sci.h
@@ -653,6 +653,7 @@
 		return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
 	if (port->mapbase == 0xffc60000)
 		return ctrl_inw(SCSPTR3) & 0x0001 ? 1 : 0; /* SCIF */
+	return 1;
 }
 #endif