In the failure path for dpu_kms_init() it is possible to get to the MMU
destroy function with uninitialized MMU structs. Check for NULL and skip
if needed.
Signed-off-by: NJordan Crouse <jcrouse@codeaurora.org>
Reviewed-by: NKristian H. Kristensen <hoegsberg@google.com>
Signed-off-by: NRob Clark <robdclark@chromium.org>