dmaengine: at_hdmac: Remove superfluous cast

Conversions of void * are applied automatically when other pointer types
are assigned to and from void *. Remove the superfluous cast.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20221025090306.297886-1-tudor.ambarus@microchip.com
Link: https://lore.kernel.org/r/20221025090306.297886-19-tudor.ambarus@microchip.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/dma/at_hdmac.c

@@ -603,7 +603,7 @@ static void atc_tasklet(struct tasklet_struct *t)
 
 static irqreturn_t at_dma_interrupt(int irq, void *dev_id)
 {
-	struct at_dma		*atdma = (struct at_dma *)dev_id;
+	struct at_dma		*atdma = dev_id;
 	struct at_dma_chan	*atchan;
 	int			i;
 	u32			status, pending, imr;