ath5k: Check if pci pdev struct is initialized in common functions.

To be able to support other busses than PCI check if pci device
structure is initialized.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Wojciech Dubowik <Wojciech.Dubowik@neratec.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath5k/led.c b/drivers/net/wireless/ath/ath5k/led.c
index 67aa52e..1f5a991 100644
--- a/drivers/net/wireless/ath/ath5k/led.c
+++ b/drivers/net/wireless/ath/ath5k/led.c
@@ -133,7 +133,7 @@
 	led->led_dev.default_trigger = trigger;
 	led->led_dev.brightness_set = ath5k_led_brightness_set;
 
-	err = led_classdev_register(&sc->pdev->dev, &led->led_dev);
+	err = led_classdev_register(sc->dev, &led->led_dev);
 	if (err) {
 		ATH5K_WARN(sc, "could not register LED %s\n", name);
 		led->sc = NULL;
@@ -165,6 +165,9 @@
 	char name[ATH5K_LED_MAX_NAME_LEN + 1];
 	const struct pci_device_id *match;
 
+	if (!sc->pdev)
+		return 0;
+
 	match = pci_match_id(&ath5k_led_devices[0], pdev);
 	if (match) {
 		__set_bit(ATH_STAT_LEDSOFT, sc->status);