dmaengine: imx-dma: Remove a redundant memset() call

The desc->desc structure is already zeroed when 'desc' is kzalloc()'ed.
There is no need to clear it twice.

Remove the redundant memset().
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/95a81d623bffde2e5d14e22fad7e8c9a9a7203f6.1678743528.git.christophe.jaillet@wanadoo.frSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/dma/imx-dma.c

@@ -750,7 +750,6 @@ static int imxdma_alloc_chan_resources(struct dma_chan *chan)
 		desc = kzalloc(sizeof(*desc), GFP_KERNEL);
 		if (!desc)
 			break;
-		memset(&desc->desc, 0, sizeof(struct dma_async_tx_descriptor));
 		dma_async_tx_descriptor_init(&desc->desc, chan);
 		desc->desc.tx_submit = imxdma_tx_submit;
 		/* txd.flags will be overwritten in prep funcs */