ALSA: hda/tas2781: Fix acpi device refcount leak at tas2781_read_acpi()

The error path at tas2781_read_acpi() doesn't release the acpi_device
adev but releases another device physdev instead.  This results in a
refcount leak.  Fix it by replacing with the right object.

Fixes: 5be27f1e ("ALSA: hda/tas2781: Add tas2781 HDA driver")
Reported-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Closes: https://lore.kernel.org/r/9f910785-e856-1539-e3e4-c9817af5fe67@linux.intel.com
Link: https://lore.kernel.org/r/20230820172635.22236-1-tiwai@suse.de


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