Currently when processing the WBM error entries, if there
is an nbuf sanity check failure, i.e. paddr in the srng
entry does not match the paddr from the rx_descriptor, then
the rx_desc flag "unmapped" is being set, without the nbuf
being unmapped and the rx_desc is getting added to the freelist.
This results in the rx_descriptor being replenished with a
new buffer, and the existing nbuf is leaked (without being unmapped).
In order to fix this issue, do not modify any fields of the
rx_desc, since it will be moved to err_state, due to the
sanity failure. Also this rx_desc will not be added to the
freelist, since it should not be replenished due to err_state.
Change-Id: I394cbf884488e75423ada2ad69087c5280bc0ab0
CRs-Fixed: 3656509
b9881b700b