[CRYPTO] all: Use kzalloc where possible

this patch converts crypto/ to kzalloc usage.
Compile tested with allyesconfig.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/api.c b/crypto/api.c
index 34e02ca..80bba63 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -179,12 +179,10 @@
 		goto out;
 
 	tfm_size = sizeof(*tfm) + crypto_ctxsize(alg, flags);
-	tfm = kmalloc(tfm_size, GFP_KERNEL);
+	tfm = kzalloc(tfm_size, GFP_KERNEL);
 	if (tfm == NULL)
 		goto out_put;
 
-	memset(tfm, 0, tfm_size);
-	
 	tfm->__crt_alg = alg;
 	
 	if (crypto_init_flags(tfm, flags))