netfilter: xtables: shorten up return clause

The return value of nf_ct_l3proto_get can directly be returned even in
the case of success.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>

net/ipv4/netfilter/ipt_CLUSTERIP.c

@@ -403,13 +403,10 @@ static int clusterip_tg_check(const struct xt_tgchk_param *par)
 	cipinfo->config = config;
 
 	ret = nf_ct_l3proto_try_module_get(par->family);
-	if (ret < 0) {
+	if (ret < 0)
 		pr_info("cannot load conntrack support for proto=%u\n",
 			par->family);
-		return ret;
-	}
-
-	return 0;
+	return ret;
 }
 
 /* drop reference count of cluster config when rule is deleted */

net/netfilter/xt_CONNSECMARK.c

@@ -107,12 +107,10 @@ static int connsecmark_tg_check(const struct xt_tgchk_param *par)
 	}
 
 	ret = nf_ct_l3proto_try_module_get(par->family);
-	if (ret < 0) {
+	if (ret < 0)
 		pr_info("cannot load conntrack support for proto=%u\n",
 			par->family);
-		return ret;
-	}
-	return 0;
+	return ret;
 }
 
 static void connsecmark_tg_destroy(const struct xt_tgdtor_param *par)

net/netfilter/xt_connbytes.c

@@ -109,13 +109,10 @@ static int connbytes_mt_check(const struct xt_mtchk_param *par)
 		return -EINVAL;
 
 	ret = nf_ct_l3proto_try_module_get(par->family);
-	if (ret < 0) {
+	if (ret < 0)
 		pr_info("cannot load conntrack support for proto=%u\n",
 			par->family);
-		return ret;
-	}
-
-	return 0;
+	return ret;
 }
 
 static void connbytes_mt_destroy(const struct xt_mtdtor_param *par)

net/netfilter/xt_connmark.c

@@ -79,12 +79,10 @@ static int connmark_tg_check(const struct xt_tgchk_param *par)
 	int ret;
 
 	ret = nf_ct_l3proto_try_module_get(par->family);
-	if (ret < 0) {
+	if (ret < 0)
 		pr_info("cannot load conntrack support for proto=%u\n",
 			par->family);
-		return ret;
-	}
-	return 0;
+	return ret;
 }
 
 static void connmark_tg_destroy(const struct xt_tgdtor_param *par)
@@ -111,12 +109,10 @@ static int connmark_mt_check(const struct xt_mtchk_param *par)
 	int ret;
 
 	ret = nf_ct_l3proto_try_module_get(par->family);
-	if (ret < 0) {
+	if (ret < 0)
 		pr_info("cannot load conntrack support for proto=%u\n",
 			par->family);
-		return ret;
-	}
-	return 0;
+	return ret;
 }
 
 static void connmark_mt_destroy(const struct xt_mtdtor_param *par)

net/netfilter/xt_conntrack.c

@@ -211,12 +211,10 @@ static int conntrack_mt_check(const struct xt_mtchk_param *par)
 	int ret;
 
 	ret = nf_ct_l3proto_try_module_get(par->family);
-	if (ret < 0) {
+	if (ret < 0)
 		pr_info("cannot load conntrack support for proto=%u\n",
 			par->family);
-		return ret;
-	}
-	return 0;
+	return ret;
 }
 
 static void conntrack_mt_destroy(const struct xt_mtdtor_param *par)

net/netfilter/xt_state.c

@@ -42,12 +42,10 @@ static int state_mt_check(const struct xt_mtchk_param *par)
 	int ret;
 
 	ret = nf_ct_l3proto_try_module_get(par->family);
-	if (ret < 0) {
+	if (ret < 0)
 		pr_info("cannot load conntrack support for proto=%u\n",
 			par->family);
-		return ret;
-	}
-	return 0;
+	return ret;
 }
 
 static void state_mt_destroy(const struct xt_mtdtor_param *par)