ALSA: tea575x-tuner: fix mute

Fix mute state reporting in tea575x-tuner.
This fixes mute function in kradio on SF64-PCR radio card.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/i2c/other/tea575x-tuner.c

@@ -225,7 +225,7 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
 	case V4L2_CID_AUDIO_MUTE:
 		if (tea->ops->mute) {
 			tea->ops->mute(tea, ctrl->value);
-			tea->mute = 1;
+			tea->mute = ctrl->value;
 			return 0;
 		}
 	}