accel/ethosu: fix job completion fence cleanup

ethosu_ioctl_submit_job() allocates done_fence before validating buffer
handles. Errors after allocation call ethosu_job_err_cleanup(), which frees
the job but leaks the uninitialized fence.

A scheduler dependency error also lets ethosu_job_run() return before
dma_fence_init(). Normal cleanup then passes a zeroed refcount to
dma_fence_put().

Release done_fence in the common cleanup path and use
dma_fence_was_initialized() to distinguish initialized fences from raw
allocations.

Fixes: 5a5e9c0228e6 ("accel: Add Arm Ethos-U NPU driver")
Cc: stable@vger.kernel.org
Reported-by: Sashiko <sashiko-bot@kernel.org>
Link: https://sashiko.dev/#/patchset/20260716065219.931088-1-zhaoguohan@kylinos.cn?part=1
Signed-off-by: GuoHan Zhao <zhaoguohan@kylinos.cn>
Link: https://patch.msgid.link/20260717061145.1478139-6-zhaoguohan@kylinos.cn
[robh: also fix goto]
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

0 files changed, 0 insertions, 0 deletions