greybus: loopback: return the right error value

If an error occurs starting up the loopback thread, the error code
is not extracted properly.  Fix that.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
1 file changed
tree: f26ea1efd5bb7d5f8d565a73b9525877f9f186ab
  1. drivers/