ALSA: hda: hda_component: Fix mutex crash if nothing ever binds

ALSA: hda: hda_component: Fix mutex crash if nothing ever binds

Move the initialization of parent->mutex into
hda_component_manager_init() so that it is always valid.

In hda_component_manager_bind() do not clear the parent information.
Only zero-fill the per-component data ready for it to be filled in
by the components as they bind.

Previously parent->mutex was being initialized only in
hda_component_manager_bind(). This meant that it was only
initialized if all components appeared and there was a bind callback.
If there wasn't a bind the mutex object was not valid when the
Realtek driver called any of the other functions.

Signed-off-by: Richard Fitzgerald <[email protected]>
Fixes: 047b9cbbaa8e ("ALSA: hda: hda_component: Protect shared data with a mutex")
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>