Since we are allowing rx ring size modification, reset fetch index
everytime. Otherwise it could have a stale value that can lead to a null
pointer dereference.
Signed-off-by: NGovindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: NParvi Kaustubhi <pkaustub@cisco.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>