crypto: crct10dif - Use PTR_RET

lib/crc-t10dif.c:42:1-3: WARNING: PTR_RET can be used

 Use PTR_RET rather than if(IS_ERR(...)) + PTR_ERR

Generated by: coccinelle/api/ptr_ret.cocci
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

lib/crc-t10dif.c

@@ -39,9 +39,7 @@ EXPORT_SYMBOL(crc_t10dif);
 static int __init crc_t10dif_mod_init(void)
 {
 	crct10dif_tfm = crypto_alloc_shash("crct10dif", 0, 0);
-	if (IS_ERR(crct10dif_tfm))
-		return PTR_ERR(crct10dif_tfm);
-	return 0;
+	return PTR_RET(crct10dif_tfm);
 }
 
 static void __exit crc_t10dif_mod_fini(void)