net: sched: fix error path in tcf_proto_create() when modules are not configured

[ Upstream commit d68d75f ]

In case modules are not configured, error out when tp->ops is null
and prevent later null pointer dereference.

Fixes: 33a4892 ("sched: push TC filter protocol creation into a separate function")
Signed-off-by: Jiri Pirko <[email protected]>
Acked-by: Cong Wang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: jpirko

net/sched/cls_api.c

@@ -151,8 +151,8 @@ static struct tcf_proto *tcf_proto_create(const char *kind, u32 protocol,
 		} else {
 			err = -ENOENT;
 		}
-		goto errout;
 #endif
+		goto errout;
 	}
 	tp->classify = tp->ops->classify;
 	tp->protocol = protocol;