Handle the fallback code path, too.

Fixes: fd28941c ("ALSA: usb-audio: Add new quirk FIXED_RATE for JBL Quantum810 Wireless")
BugLink: https://lore.kernel.org/alsa-devel/Y7frf3N%2FxzvESEsN@kili/Reported-by: NDan Carpenter <error27@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: NJaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230109141133.335543-1-perex@perex.czSigned-off-by: NTakashi Iwai <tiwai@suse.de>