net: move stale comment about ntuple validation

Gal points out that the comment now belongs further down, since
the original if condition was split into two in
commit de7f758 ("net: ethtool: prevent flow steering to RSS contexts which don't exist")

Link: https://lore.kernel.org/de4a2a8a-1eb9-4fa8-af87-7526e58218e9@nvidia.com
Reviewed-by: Gal Pressman <gal@nvidia.com>
Link: https://patch.msgid.link/20250214224340.2268691-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net/ethtool/ioctl.c

@@ -992,8 +992,10 @@ static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
 	if (rc)
 		return rc;
 
-	/* Nonzero ring with RSS only makes sense if NIC adds them together */
 	if (cmd == ETHTOOL_SRXCLSRLINS && info.fs.flow_type & FLOW_RSS) {
+		/* Nonzero ring with RSS only makes sense
+		 * if NIC adds them together
+		 */
 		if (!ops->cap_rss_rxnfc_adds &&
 		    ethtool_get_flow_spec_ring(info.fs.ring_cookie))
 			return -EINVAL;