rt2x00: Cleanup/optimize set_state() function callback function

* Reduce goto usage
* Mark if-statements which are true on hardware error unlikely()
* Cleanup debug messages

This makes the code look nicer and be better optimized since
the chance of hardware errors should be very small.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index dc5ab90..48f4aec 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -112,6 +112,8 @@
 	if (status)
 		return status;
 
+	rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_ON);
+
 	rt2x00leds_led_radio(rt2x00dev, true);
 	rt2x00led_led_activity(rt2x00dev, true);
 
@@ -157,6 +159,7 @@
 	 * Disable radio.
 	 */
 	rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF);
+	rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF);
 	rt2x00led_led_activity(rt2x00dev, false);
 	rt2x00leds_led_radio(rt2x00dev, false);
 }