[syzbot] kernel BUG in rxrpc_put_call

[syzbot]

> #syz test: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git

want 2 args (repo, branch), got 5

>
> diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c
> index 3ded5a24627c..f3c9f0201c15 100644
> --- a/net/rxrpc/call_object.c
> +++ b/net/rxrpc/call_object.c
> @@ -294,7 +294,7 @@ static void rxrpc_put_call_slot(struct rxrpc_call *call)
>  static int rxrpc_connect_call(struct rxrpc_call *call, gfp_t gfp)
>  {
>  	struct rxrpc_local *local = call->local;
> -	int ret = 0;
> +	int ret = -ENOMEM;
>  
>  	_enter("{%d,%lx},", call->debug_id, call->user_call_ID);
>  
>