crypto: drop unnecessary return statements

Fix checkpatch.pl warnings:

WARNING: void function return statements are not generally useful
FILE: crypto/rmd128.c:218:
FILE: crypto/rmd160.c:261:
FILE: crypto/rmd256.c:233:
FILE: crypto/rmd320.c:280:
FILE: crypto/tcrypt.c:385:
FILE: drivers/crypto/ixp4xx_crypto.c:538:
FILE: drivers/crypto/marvell/cesa.c:81:
FILE: drivers/crypto/ux500/cryp/cryp_core.c:1755:
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/rmd128.c

@@ -213,8 +213,6 @@ static void rmd128_transform(u32 *state, const __le32 *in)
 	state[2] = state[3] + aa + bbb;
 	state[3] = state[0] + bb + ccc;
 	state[0] = ddd;
-
-	return;
 }
 
 static int rmd128_init(struct shash_desc *desc)

crypto/rmd160.c

@@ -256,8 +256,6 @@ static void rmd160_transform(u32 *state, const __le32 *in)
 	state[3] = state[4] + aa + bbb;
 	state[4] = state[0] + bb + ccc;
 	state[0] = ddd;
-
-	return;
 }
 
 static int rmd160_init(struct shash_desc *desc)

crypto/rmd256.c

@@ -228,8 +228,6 @@ static void rmd256_transform(u32 *state, const __le32 *in)
 	state[5] += bbb;
 	state[6] += ccc;
 	state[7] += ddd;
-
-	return;
 }
 
 static int rmd256_init(struct shash_desc *desc)

crypto/rmd320.c

@@ -275,8 +275,6 @@ static void rmd320_transform(u32 *state, const __le32 *in)
 	state[7] += ccc;
 	state[8] += ddd;
 	state[9] += eee;
-
-	return;
 }
 
 static int rmd320_init(struct shash_desc *desc)

crypto/tcrypt.c

@@ -381,7 +381,6 @@ static void test_aead_speed(const char *algo, int enc, unsigned int secs,
 	testmgr_free_buf(xbuf);
 out_noxbuf:
 	kfree(iv);
-	return;
 }
 
 static void test_hash_sg_init(struct scatterlist *sg)

drivers/crypto/ixp4xx_crypto.c

@@ -534,7 +534,6 @@ static void release_ixp_crypto(struct device *dev)
 			NPE_QLEN_TOTAL * sizeof( struct crypt_ctl),
 			crypt_virt, crypt_phys);
 	}
-	return;
 }
 
 static void reset_sa_dir(struct ix_sa_dir *dir)

drivers/crypto/marvell/cesa.c

@@ -76,8 +76,6 @@ static void mv_cesa_rearm_engine(struct mv_cesa_engine *engine)
 
 	ctx = crypto_tfm_ctx(req->tfm);
 	ctx->ops->step(req);
-
-	return;
 }
 
 static int mv_cesa_std_process(struct mv_cesa_engine *engine, u32 status)

drivers/crypto/ux500/cryp/cryp_core.c

@@ -1751,7 +1751,6 @@ static void __exit ux500_cryp_mod_fini(void)
 {
 	pr_debug("[%s] is called!", __func__);
 	platform_driver_unregister(&cryp_driver);
-	return;
 }
 
 module_init(ux500_cryp_mod_init);