usb: gadget: net2272: skip BAR1 on error handling paths in probe

net2272_rdk1_probe() skips "i == 1" (BAR1) during allocation of
resources. The patch does this on error hanling paths as well.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Evgeny Novikov <novikov@ispras.ru>
Signed-off-by: Felipe Balbi <balbi@kernel.org>