cross-tree: phase out dma_zalloc_coherent()

We already need to zero out memory for dma_alloc_coherent(), as such
using dma_zalloc_coherent() is superflous. Phase it out.

This change was generated with the following Coccinelle SmPL patch:

@ replace_dma_zalloc_coherent @
expression dev, size, data, handle, flags;
@@

-dma_zalloc_coherent(dev, size, handle, flags)
+dma_alloc_coherent(dev, size, handle, flags)

Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
[hch: re-ran the script on the latest tree]
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/drivers/crypto/ixp4xx_crypto.c b/drivers/crypto/ixp4xx_crypto.c
index 19fba99..1b0d156 100644
--- a/drivers/crypto/ixp4xx_crypto.c
+++ b/drivers/crypto/ixp4xx_crypto.c
@@ -260,9 +260,9 @@ static int setup_crypt_desc(void)
 {
 	struct device *dev = &pdev->dev;
 	BUILD_BUG_ON(sizeof(struct crypt_ctl) != 64);
-	crypt_virt = dma_zalloc_coherent(dev,
-					 NPE_QLEN * sizeof(struct crypt_ctl),
-					 &crypt_phys, GFP_ATOMIC);
+	crypt_virt = dma_alloc_coherent(dev,
+					NPE_QLEN * sizeof(struct crypt_ctl),
+					&crypt_phys, GFP_ATOMIC);
 	if (!crypt_virt)
 		return -ENOMEM;
 	return 0;