drm/amdgpu/userq: assign an error code for invalid userq va

commit 883bd89 upstream.

It should return an error code if userq VA validation fails.

Fixes: 9e46b8b ("drm/amdgpu: validate userq buffer virtual address and size")
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: prliangpub

drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c

@@ -71,6 +71,7 @@ int amdgpu_userq_input_va_validate(struct amdgpu_vm *vm, u64 addr,
 		return 0;
 	}
 
+	r = -EINVAL;
 out_err:
 	amdgpu_bo_unreserve(vm->root.bo);
 	return r;
@@ -476,6 +477,7 @@ amdgpu_userq_create(struct drm_file *filp, union drm_amdgpu_userq *args)
 	if (amdgpu_userq_input_va_validate(&fpriv->vm, args->in.queue_va, args->in.queue_size) ||
 	    amdgpu_userq_input_va_validate(&fpriv->vm, args->in.rptr_va, AMDGPU_GPU_PAGE_SIZE) ||
 	    amdgpu_userq_input_va_validate(&fpriv->vm, args->in.wptr_va, AMDGPU_GPU_PAGE_SIZE)) {
+		r = -EINVAL;
 		kfree(queue);
 		goto unlock;
 	}