gve: Recording rx queue before sending to napi

This caused a significant performance degredation when using generic XDP
with multiple queues.

Fixes: f5cedc84

 ("gve: Add transmit and receive support")
Signed-off-by: Tao Liu <xliutaox@google.com>
Link: https://lore.kernel.org/r/20220207175901.2486596-1-jeroendb@google.com


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