NTB: Fix static check warning in perf_clear_test

As pthr->dma_chan can't be NULL in this context, so there is
no need to check pthr->dma_chan.

Fixes: 99a06056124d ("NTB: ntb_perf: Fix address err in perf_copy_chunk")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jiasen Lin <linjiasen@hygon.cn>
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 972f6d984f6d6e0d0dbc4ab077cec323e1f38535..f73b126dde65b544ecead2fe7e1b48c8831b6bed 100644 (file)
--- a/drivers/ntb/test/ntb_perf.c
+++ b/drivers/ntb/test/ntb_perf.c
@@ -1010,8 +1010,8 @@ static void perf_clear_test(struct perf_thread *pthr)
                                   pthr->perf->test_peer->dma_dst_addr,
                                   pthr->perf->test_peer->outbuf_size,
                                   DMA_FROM_DEVICE, 0);
-       if (pthr->dma_chan)
-               dma_release_channel(pthr->dma_chan);
+
+       dma_release_channel(pthr->dma_chan);
 
 no_dma_notify:
        atomic_dec(&perf->tsync);