crypto: cpt - remove casting dma_alloc_coherent

Remove casting the values returned by dma_alloc_coherent.
Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/cavium/cpt/cptvf_main.c

@@ -233,10 +233,10 @@ static int alloc_command_queues(struct cpt_vf *cptvf,
 
 			c_size = (rem_q_size > qcsize_bytes) ? qcsize_bytes :
 					rem_q_size;
-			curr->head = (u8 *)dma_alloc_coherent(&pdev->dev,
-							      c_size + CPT_NEXT_CHUNK_PTR_SIZE,
-							      &curr->dma_addr,
-							      GFP_KERNEL);
+			curr->head = dma_alloc_coherent(&pdev->dev,
+							c_size + CPT_NEXT_CHUNK_PTR_SIZE,
+							&curr->dma_addr,
+							GFP_KERNEL);
 			if (!curr->head) {
 				dev_err(&pdev->dev, "Command Q (%d) chunk (%d) allocation failed\n",
 					i, queue->nchunks);