interface: fix memory leak on error in __interface_add()

Detected by Coverity in cid 1441495

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

diff --git a/interface.c b/interface.c
index 4cefe6454dae6c8c94989e0065250661b64e26e1..44f7a874e3033044e2e199ce3a533ba72fce8f76 100644 (file)
--- a/interface.c
+++ b/interface.c
@@ -892,7 +892,7 @@ static bool __interface_add(struct interface *iface, struct blob_attr *config, b
 {
        struct blob_attr *tb[IFACE_ATTR_MAX];
        struct blob_attr *cur;
-       char *name = iface->dynamic ? strdup(iface->name) : NULL;
+       char *name = NULL;
 
        blobmsg_parse(iface_attrs, IFACE_ATTR_MAX, tb,
                      blob_data(config), blob_len(config));
@@ -908,6 +908,13 @@ static bool __interface_add(struct interface *iface, struct blob_attr *config, b
                        iface->ifname = blobmsg_data(cur);
        }
 
+       if (iface->dynamic) {
+               name = strdup(iface->name);
+
+               if (!name)
+                       return false;
+       }
+
        iface->config = config;
        vlist_add(&interfaces, &iface->node, iface->name);