ALSA: ad1889: Fix right attenuation proc output

The right attenuation bits aren't needed to be shifted.

Spotted by coverity CID 11427.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/ad1889.c

@@ -739,7 +739,7 @@ snd_ad1889_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffe
 	reg = ad1889_readw(chip, AD_DS_WADA);
 	snd_iprintf(buffer, "Right: %s, -%d dB\n",
 			(reg & AD_DS_WADA_RWAM) ? "mute" : "unmute",
-			((reg & AD_DS_WADA_RWAA) >> 8) * 3);
+			(reg & AD_DS_WADA_RWAA) * 3);
 	
 	reg = ad1889_readw(chip, AD_DS_WAS);
 	snd_iprintf(buffer, "Wave samplerate: %u Hz\n", reg);