dmaengine: ioat: remove unused ‘res’

In __cleanup(), variable ‘res’ is initialized but never used, which
leads to warning with W=1

drivers/dma/ioat/dma.c: In function ‘__cleanup’:
drivers/dma/ioat/dma.c:614:28: warning: variable ‘res’ set but not used [-Wunused-but-set-variable]
    struct dmaengine_result res;

So remove it.

Cc: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 0 insertions, 3 deletions

diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c
index 1350b880bc0d..c867db765936 100644
--- a/drivers/dma/ioat/dma.c
+++ b/drivers/dma/ioat/dma.c
@@ -611,11 +611,8 @@ static void __cleanup(struct ioatdma_chan *ioat_chan, dma_addr_t phys_complete)
 
                 tx = &desc->txd;
                 if (tx->cookie) {
-                        struct dmaengine_result res;
-
                         dma_cookie_complete(tx);
                         dma_descriptor_unmap(tx);
-                        res.result = DMA_TRANS_NOERROR;
                         dmaengine_desc_get_callback_invoke(tx, NULL);
                         tx->callback = NULL;
                         tx->callback_result = NULL;