[CRYPTO]: HMAC needs some more scatterlist fixups.

hmac_setkey(), hmac_init(), and hmac_final() have
a singular on-stack scatterlist.  Initialit is
using sg_init_one() instead of using sg_set_buf().

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/crypto/hmac.c b/crypto/hmac.c
index e3f5c0f..0f05be7 100644
--- a/crypto/hmac.c
+++ b/crypto/hmac.c
@@ -61,7 +61,7 @@
 		desc.tfm = tfm;
 		desc.flags = crypto_hash_get_flags(parent);
 		desc.flags &= CRYPTO_TFM_REQ_MAY_SLEEP;
-		sg_set_buf(&tmp, inkey, keylen);
+		sg_init_one(&tmp, inkey, keylen);
 
 		err = crypto_hash_digest(&desc, &tmp, keylen, digest);
 		if (err)
@@ -96,7 +96,7 @@
 
 	desc.tfm = ctx->child;
 	desc.flags = pdesc->flags & CRYPTO_TFM_REQ_MAY_SLEEP;
-	sg_set_buf(&tmp, ipad, bs);
+	sg_init_one(&tmp, ipad, bs);
 
 	err = crypto_hash_init(&desc);
 	if (unlikely(err))
@@ -131,7 +131,7 @@
 
 	desc.tfm = ctx->child;
 	desc.flags = pdesc->flags & CRYPTO_TFM_REQ_MAY_SLEEP;
-	sg_set_buf(&tmp, opad, bs + ds);
+	sg_init_one(&tmp, opad, bs + ds);
 
 	err = crypto_hash_final(&desc, digest);
 	if (unlikely(err))