enic: fix incorrect MTU comparison in enic_change_mtu()

JIRA: https://issues.redhat.com/browse/RHEL-108264

commit aaf2b24
Author: Alok Tiwari <alok.a.tiwari@oracle.com>
Date:   Sat Jun 28 07:56:05 2025 -0700

    enic: fix incorrect MTU comparison in enic_change_mtu()

    The comparison in enic_change_mtu() incorrectly used the current
    netdev->mtu instead of the new new_mtu value when warning about
    an MTU exceeding the port MTU. This could suppress valid warnings
    or issue incorrect ones.

    Fix the condition and log to properly reflect the new_mtu.

    Fixes: ab123fe ("enic: handle mtu change for vf properly")
    Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
    Acked-by: John Daley <johndale@cisco.com>
    Reviewed-by: Simon Horman <horms@kernel.org>
    Link: https://patch.msgid.link/20250628145612.476096-1-alok.a.tiwari@oracle.com
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Signed-off-by: CKI Backport Bot <cki-ci-bot+cki-gitlab-backport-bot@redhat.com>

Author: CKI Backport Bot

drivers/net/ethernet/cisco/enic/enic_main.c

@@ -1863,10 +1863,10 @@ static int enic_change_mtu(struct net_device *netdev, int new_mtu)
 	if (enic_is_dynamic(enic) || enic_is_sriov_vf(enic))
 		return -EOPNOTSUPP;
 
-	if (netdev->mtu > enic->port_mtu)
+	if (new_mtu > enic->port_mtu)
 		netdev_warn(netdev,
 			    "interface MTU (%d) set higher than port MTU (%d)\n",
-			    netdev->mtu, enic->port_mtu);
+			    new_mtu, enic->port_mtu);
 
 	return _enic_change_mtu(netdev, new_mtu);
 }