octeontx2-pf: Fix memory leak during interface down

During 'ifconfig <netdev> down' one RSS memory was not getting freed.
This patch fixes the same.

Fixes: 81a4362 ("octeontx2-pf: Add RSS multi group support")
Signed-off-by: Suman Ghosh <sumang@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Author: sumang-mrvl

drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c

@@ -1934,6 +1934,8 @@ int otx2_stop(struct net_device *netdev)
 	/* Clear RSS enable flag */
 	rss = &pf->hw.rss_info;
 	rss->enable = false;
+	if (!netif_is_rxfh_configured(netdev))
+		kfree(rss->rss_ctx[DEFAULT_RSS_CONTEXT_GROUP]);
 
 	/* Cleanup Queue IRQ */
 	vec = pci_irq_vector(pf->pdev,