ALSA: aoa: Fix typos in PCM fix patch

There was typos in the previous fix for PCM to detach the struct
device that caused build errors.  Corrected here.

Fixes: bc41a722 ("ALSA: pcm: Don't embed device")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202308181347.q3XPr3Lm-lkp@intel.com/
Link: https://lore.kernel.org/r/20230818070913.23336-1-tiwai@suse.de


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