ntb_perf: Fix an error code in perf_copy_chunk()

We accidentally return success if dmaengine_submit() fails.  The fix is
to preserve the error code from dma_submit_error().

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>

diff --git a/drivers/ntb/test/ntb_perf.c b/drivers/ntb/test/ntb_perf.c
index 1829a17..b376609 100644 (file)
--- a/drivers/ntb/test/ntb_perf.c
+++ b/drivers/ntb/test/ntb_perf.c
@@ -828,7 +828,8 @@ static int perf_copy_chunk(struct perf_thread *pthr,
        tx->callback_param = pthr;
        dma_set_unmap(tx, unmap);
 
-       if (dma_submit_error(dmaengine_submit(tx))) {
+       ret = dma_submit_error(dmaengine_submit(tx));
+       if (ret) {
                dmaengine_unmap_put(unmap);
                goto err_free_resource;
        }