rt2800: cleanup rt2800_init_rfcsr

This procedure is simple switch now and return no error any longer.
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2800lib.c

@@ -5120,25 +5120,11 @@ static void rt2800_init_rfcsr_5592(struct rt2x00_dev *rt2x00dev)
 	rt2800_led_open_drain_enable(rt2x00dev);
 }
 
-static int rt2800_init_rfcsr(struct rt2x00_dev *rt2x00dev)
+static void rt2800_init_rfcsr(struct rt2x00_dev *rt2x00dev)
 {
-	if (!rt2x00_rt(rt2x00dev, RT3070) &&
-	    !rt2x00_rt(rt2x00dev, RT3071) &&
-	    !rt2x00_rt(rt2x00dev, RT3090) &&
-	    !rt2x00_rt(rt2x00dev, RT3290) &&
-	    !rt2x00_rt(rt2x00dev, RT3352) &&
-	    !rt2x00_rt(rt2x00dev, RT3390) &&
-	    !rt2x00_rt(rt2x00dev, RT3572) &&
-	    !rt2x00_rt(rt2x00dev, RT5390) &&
-	    !rt2x00_rt(rt2x00dev, RT5392) &&
-	    !rt2x00_rt(rt2x00dev, RT5392) &&
-	    !rt2x00_rt(rt2x00dev, RT5592) &&
-	    !rt2800_is_305x_soc(rt2x00dev))
-		return 0;
-
 	if (rt2800_is_305x_soc(rt2x00dev)) {
 		rt2800_init_rfcsr_305x_soc(rt2x00dev);
-		return 0;
+		return;
 	}
 
 	switch (rt2x00dev->chip.rt) {
@@ -5167,10 +5153,8 @@ static int rt2800_init_rfcsr(struct rt2x00_dev *rt2x00dev)
 		break;
 	case RT5592:
 		rt2800_init_rfcsr_5592(rt2x00dev);
-		return 0;
+		break;
 	}
-
-		return 0;
 }
 
 int rt2800_enable_radio(struct rt2x00_dev *rt2x00dev)
@@ -5196,10 +5180,11 @@ int rt2800_enable_radio(struct rt2x00_dev *rt2x00dev)
 	}
 	msleep(1);
 
-	if (unlikely(rt2800_init_bbp(rt2x00dev) ||
-		     rt2800_init_rfcsr(rt2x00dev)))
+	if (unlikely(rt2800_init_bbp(rt2x00dev)))
 		return -EIO;
 
+	rt2800_init_rfcsr(rt2x00dev);
+
 	if (rt2x00_is_usb(rt2x00dev) &&
 	    (rt2x00_rt(rt2x00dev, RT3070) ||
 	     rt2x00_rt(rt2x00dev, RT3071) ||