crypto: use pci_zalloc_consistent

Remove the now unnecessary memset too.

Signed-off-by: Joe Perches <[e-mail]>
Herbert Xu <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/crypto/hifn_795x.c

···
 		}
 	}
 
-	dev->desc_virt = pci_alloc_consistent(pdev, sizeof(struct hifn_dma),
-			&dev->desc_dma);
+	dev->desc_virt = pci_zalloc_consistent(pdev, sizeof(struct hifn_dma),
+					       &dev->desc_dma);
 	if (!dev->desc_virt) {
 		dprintk("Failed to allocate descriptor rings.\n");
 		err = -ENOMEM;
 		goto err_out_unmap_bars;
 	}
-	memset(dev->desc_virt, 0, sizeof(struct hifn_dma));
 
 	dev->pdev = pdev;
 	dev->irq = pdev->irq;