serial: sh-sci: Use existing local variable in sci_parse_dt()

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 5ec1a70..3607719 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -2635,7 +2635,7 @@
 	if (!IS_ENABLED(CONFIG_OF) || !np)
 		return NULL;
 
-	match = of_match_node(of_sci_match, pdev->dev.of_node);
+	match = of_match_node(of_sci_match, np);
 	if (!match)
 		return NULL;