dmaengine: at_hdmac: add missing kfree() call in at_dma_xlate()

commit e097eb7473d9e70da9e03276f61cd392ccb9d79f upstream.

If memory allocation for 'atslave' succeed, at_dma_xlate() doesn't have a
corresponding kfree() in exception handling. Thus add kfree() for this
function implementation.

Fixes: bbe89c8e3d59 ("at_hdmac: move to generic DMA binding")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20200817115728.1706719-4-yukuai3@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 80c1974ef539b19381b341a5ba33249f94ac881f..303bc3e601a1ca7e5f9eb22faed811418c27f6b3 100644 (file)
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -1708,6 +1708,7 @@ static struct dma_chan *at_dma_xlate(struct of_phandle_args *dma_spec,
        chan = dma_request_channel(mask, at_dma_filter, atslave);
        if (!chan) {
                put_device(&dmac_pdev->dev);
+               kfree(atslave);
                return NULL;
        }