greybus: connection: fix jump label on device_add failure

On device_add() failure in gb_connection_create_range() we jump to
err_remove_ida. Instead we should be jumping to err_free_connection, so
change the flow to accomodate.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>