net: ethernet: ti: am65-cpsw: Fix forever loop in cleanup code

This error handling has a typo.  It should i++ instead of i--.  In the
original code the error handling will loop until it crashes.

Fixes: da70d184 ("net: ethernet: ti: am65-cpsw: Introduce multi queue Rx")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Link: https://patch.msgid.link/8e7960cc-415d-48d7-99ce-f623022ec7b5@stanley.mountain


Signed-off-by: Jakub Kicinski <kuba@kernel.org>