drm/amdgpu: fix type mismatch error
drm/amdgpu: fix type mismatch error

remaining timeout returned by amdgpu_fence_wait_any can be larger than
max int value, thus the truncated 32 bit value in r ends up being
negative while its original long value is positive.

Signed-off-by: monk.liu <f0dcd2918cf36bae5755fd56cd0eda1b82813c07@amd.com>
Reviewed-by: Michel Dänzer <242b79f0804cf52679d58f27ed754158c1323c75@amd.com>
Reviewed-by: Christian König <c7ea837d7a46effe4232b086213468b8b31643bf@amd.com>
Reviewed-by: Jammy Zhou <14aa832fda862cf32a0e072c86c92f414da11bc2@amd.com>

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