crypto: skcipher - fold skcipher_walk_skcipher() into skcipher_walk_virt()

Fold skcipher_walk_skcipher() into skcipher_walk_virt() which is its
only remaining caller.  No change in behavior.

Signed-off-by: Eric Biggers <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>

Author: ebiggers

crypto/skcipher.c

@@ -306,19 +306,22 @@ static int skcipher_walk_first(struct skcipher_walk *walk)
 	return skcipher_walk_next(walk);
 }
 
-static int skcipher_walk_skcipher(struct skcipher_walk *walk,
-				  struct skcipher_request *req)
+int skcipher_walk_virt(struct skcipher_walk *walk,
+		       struct skcipher_request *req, bool atomic)
 {
 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
 	struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
+	int err = 0;
+
+	might_sleep_if(req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP);
 
 	walk->total = req->cryptlen;
 	walk->nbytes = 0;
 	walk->iv = req->iv;
 	walk->oiv = req->iv;
 
 	if (unlikely(!walk->total))
-		return 0;
+		goto out;
 
 	scatterwalk_start(&walk->in, req->src);
 	scatterwalk_start(&walk->out, req->dst);
@@ -336,18 +339,8 @@ static int skcipher_walk_skcipher(struct skcipher_walk *walk,
 	else
 		walk->stride = alg->walksize;
 
-	return skcipher_walk_first(walk);
-}
-
-int skcipher_walk_virt(struct skcipher_walk *walk,
-		       struct skcipher_request *req, bool atomic)
-{
-	int err;
-
-	might_sleep_if(req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP);
-
-	err = skcipher_walk_skcipher(walk, req);
-
+	err = skcipher_walk_first(walk);
+out:
 	walk->flags &= atomic ? ~SKCIPHER_WALK_SLEEP : ~0;
 
 	return err;