ALSA: emu10k1: simplify interrupt handler, part 3

Handle the "timeout" (actually the retry counter) such that it's more
obvious and causes less cost in the normal case.

Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230518093047.3697887-3-oswald.buddenhagen@gmx.de


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