drm/radeon: fix null pointer dereference in dce6+ audio code
Don't crash if the encoder does not have an afmt struct.
bug:
https://bugs.freedesktop.org/show_bug.cgi?id=72283
Signed-off-by:
Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent
0ca223b0
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