ath6kl: Cleanup void *parent_dev in struct wmi

Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath6kl/init.c b/drivers/net/wireless/ath/ath6kl/init.c
index d574d08..1d6294f 100644
--- a/drivers/net/wireless/ath/ath6kl/init.c
+++ b/drivers/net/wireless/ath/ath6kl/init.c
@@ -1053,7 +1053,7 @@
 
 	/* Indicate that WMI is enabled (although not ready yet) */
 	set_bit(WMI_ENABLED, &ar->flag);
-	ar->wmi = ath6kl_wmi_init((void *) ar);
+	ar->wmi = ath6kl_wmi_init(ar);
 	if (!ar->wmi) {
 		ath6kl_err("failed to initialize wmi\n");
 		status = -EIO;