crypto: squash lines for simple wrapper functions

Remove unneeded variables and assignments.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/crct10dif_generic.c b/crypto/crct10dif_generic.c
index c1229614..8e94e29 100644
--- a/crypto/crct10dif_generic.c
+++ b/crypto/crct10dif_generic.c
@@ -107,10 +107,7 @@
 
 static int __init crct10dif_mod_init(void)
 {
-	int ret;
-
-	ret = crypto_register_shash(&alg);
-	return ret;
+	return crypto_register_shash(&alg);
 }
 
 static void __exit crct10dif_mod_fini(void)
diff --git a/crypto/mcryptd.c b/crypto/mcryptd.c
index 86fb59b..94ee44a 100644
--- a/crypto/mcryptd.c
+++ b/crypto/mcryptd.c
@@ -612,12 +612,7 @@
 
 int ahash_mcryptd_digest(struct ahash_request *desc)
 {
-	int err;
-
-	err = crypto_ahash_init(desc) ?:
-	      ahash_mcryptd_finup(desc);
-
-	return err;
+	return crypto_ahash_init(desc) ?: ahash_mcryptd_finup(desc);
 }
 
 int ahash_mcryptd_update(struct ahash_request *desc)
diff --git a/drivers/crypto/hifn_795x.c b/drivers/crypto/hifn_795x.c
index eee2c7e..e09d405 100644
--- a/drivers/crypto/hifn_795x.c
+++ b/drivers/crypto/hifn_795x.c
@@ -636,20 +636,12 @@
 
 static inline u32 hifn_read_0(struct hifn_device *dev, u32 reg)
 {
-	u32 ret;
-
-	ret = readl(dev->bar[0] + reg);
-
-	return ret;
+	return readl(dev->bar[0] + reg);
 }
 
 static inline u32 hifn_read_1(struct hifn_device *dev, u32 reg)
 {
-	u32 ret;
-
-	ret = readl(dev->bar[1] + reg);
-
-	return ret;
+	return readl(dev->bar[1] + reg);
 }
 
 static inline void hifn_write_0(struct hifn_device *dev, u32 reg, u32 val)