ALSA: usb-audio: remove some dead code

commit b39e077f upstream.

We recently cleaned up the error handling in commit 52c3e317 ("ALSA:
usb-audio: Unify the release of usb_mixer_elem_info objects") but
accidentally left this stray return.

Fixes: 52c3e317 ("ALSA: usb-audio: Unify the release of usb_mixer_elem_info objects")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

sound/usb/mixer.c

@@ -2670,7 +2670,6 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid,
 		usb_audio_err(state->chip, "cannot malloc kcontrol\n");
 		err = -ENOMEM;
 		goto error_name;
-		return -ENOMEM;
 	}
 	kctl->private_value = (unsigned long)namelist;
 	kctl->private_free = usb_mixer_selector_elem_free;