confile: cleanup set_config_rootfs_path()

src/lxc/confile.c

@@ -2412,8 +2412,9 @@ static int set_config_includefiles(const char *key, const char *value,
 static int set_config_rootfs_path(const char *key, const char *value,
 				  struct lxc_conf *lxc_conf, void *data)
 {
+	__do_free char *dup = NULL;
 	int ret;
-	char *dup, *tmp;
+	char *tmp;
 	const char *container_path;
 
 	if (lxc_config_value_empty(value)) {
@@ -2424,7 +2425,7 @@ static int set_config_rootfs_path(const char *key, const char *value,
 
 	dup = strdup(value);
 	if (!dup)
-		return -1;
+		return ret_errno(ENOMEM);
 
 	/* Split <storage type>:<container path> into <storage type> and
 	 * <container path>. Set "rootfs.bdev_type" to <storage type> and
@@ -2435,10 +2436,8 @@ static int set_config_rootfs_path(const char *key, const char *value,
 		*tmp = '\0';
 
 		ret = set_config_path_item(&lxc_conf->rootfs.bdev_type, dup);
-		if (ret < 0) {
-			free(dup);
-			return -1;
-		}
+		if (ret < 0)
+			return ret_errno(ENOMEM);
 
 		tmp++;
 		container_path = tmp;
@@ -2446,10 +2445,7 @@ static int set_config_rootfs_path(const char *key, const char *value,
 		container_path = value;
 	}
 
-	ret = set_config_path_item(&lxc_conf->rootfs.path, container_path);
-	free(dup);
-
-	return ret;
+	return set_config_path_item(&lxc_conf->rootfs.path, container_path);
 }
 
 static int set_config_rootfs_managed(const char *key, const char *value,