gve: DQO: Fix off by one in gve_rx_dqo()

The rx->dqo.buf_states[] array is allocated in gve_rx_alloc_ring_dqo()
and it has rx->dqo.num_buf_states so this > needs to >= to prevent an
out of bounds access.

Fixes: 9b8dd5e ("gve: DQO: Add RX path")
Signed-off-by: Dan Carpenter <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: Dan Carpenter

drivers/net/ethernet/google/gve/gve_rx_dqo.c

@@ -525,7 +525,7 @@ static int gve_rx_dqo(struct napi_struct *napi, struct gve_rx_ring *rx,
 	struct gve_priv *priv = rx->gve;
 	u16 buf_len;
 
-	if (unlikely(buffer_id > rx->dqo.num_buf_states)) {
+	if (unlikely(buffer_id >= rx->dqo.num_buf_states)) {
 		net_err_ratelimited("%s: Invalid RX buffer_id=%u\n",
 				    priv->dev->name, buffer_id);
 		return -EINVAL;