gpu: ion: dereferencing an ERR_PTR

We dereference "heap->task" before checking if it's an ERR_PTR.

Fixes: ea313b5f88ed ('gpu: ion: Also shrink memory cached in the deferred free list')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/android/ion/ion_heap.c b/drivers/staging/android/ion/ion_heap.c
index 296c74f..37e64d5 100644 (file)
--- a/drivers/staging/android/ion/ion_heap.c
+++ b/drivers/staging/android/ion/ion_heap.c
@@ -243,12 +243,12 @@ int ion_heap_init_deferred_free(struct ion_heap *heap)
        init_waitqueue_head(&heap->waitqueue);
        heap->task = kthread_run(ion_heap_deferred_free, heap,
                                 "%s", heap->name);
-       sched_setscheduler(heap->task, SCHED_IDLE, &param);
        if (IS_ERR(heap->task)) {
                pr_err("%s: creating thread for deferred free failed\n",
                       __func__);
                return PTR_RET(heap->task);
        }
+       sched_setscheduler(heap->task, SCHED_IDLE, &param);
        return 0;
 }