drm/amd/display: add protection in link encoder matching logic

[Why]
Link encoders are created based on its engine ID. The position of a link
encoder in an array could be null since it didn't be allocated.  Current
matching logic didn't consider this situation and could get null
encoder.

[How]
To add null encoder check to make the matching logic can go to next to
get a valid one.

Tested-by: Daniel Wheeler <[email protected]>
Reviewed-by: Aric Cyr <[email protected]>
Acked-by: Rodrigo Siqueira <[email protected]>
Signed-off-by: Martin Tsai <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

0 files changed, 0 insertions, 0 deletions