usb: gadget: renesas_usbhs: remove unneeded parameter from usbhs_mod_is_host()

it was possible to get usbhs_mod from usbhs_priv.
this patch remove unneeded parameter.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/renesas_usbhs/pipe.c b/drivers/usb/renesas_usbhs/pipe.c
index 6aaa436..ff97a8e 100644
--- a/drivers/usb/renesas_usbhs/pipe.c
+++ b/drivers/usb/renesas_usbhs/pipe.c
@@ -545,9 +545,8 @@
 				     int dir_in)
 {
 	struct device *dev = usbhs_priv_to_dev(priv);
-	struct usbhs_mod *mod = usbhs_mod_get_current(priv);
 	struct usbhs_pipe *pipe;
-	int is_host = usbhs_mod_is_host(priv, mod);
+	int is_host = usbhs_mod_is_host(priv);
 	int ret;
 	u16 pipecfg, pipebuf;