ALSA: hda - Allow calling snd_hdac_i915_*() without actual binding
ALSA: hda - Allow calling snd_hdac_i915_*() without actual binding

Add the missing NULL checks so that snd_hdac_i915*() can be called
even after the binding with i915 failed.

Signed-off-by: Takashi Iwai <4596b3305151c7ee743192a95d394341e3d3b644@suse.de>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs