V4L/DVB (9151): dsbr100: Add returns and fix codingstyle for vidioc_s_ctrl

Added return -EBUSY and fixed codingstyle issue
Signed-off-by: Alexey Klimov <klimov.linux@gmail.com>
Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/radio/dsbr100.c

@@ -360,11 +360,15 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
 		if (ctrl->value) {
-			if (dsbr100_stop(radio)==-1)
+			if (dsbr100_stop(radio) == -1) {
 				warn("Radio did not respond properly");
+				return -EBUSY;
+			}
 		} else {
-			if (dsbr100_start(radio)==-1)
+			if (dsbr100_start(radio) == -1) {
 				warn("Radio did not respond properly");
+				return -EBUSY;
+			}
 		}
 		return 0;
 	}