ALSA: emu10k1: don't forget to reset reclaimed synth voices

The subsequent allocation may still fail after freeing some voices, so
we shouldn't leave them in their programmed state.

Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230518140947.3725394-3-oswald.buddenhagen@gmx.de


Signed-off-by: Takashi Iwai <tiwai@suse.de>