RDMA/nes: Fix test of uninitialized netdev

Commit 1765a575334f ("net: make dev->master general") introduced a
test of an uninitialized netdev. Fix the code so the intended netdev
is tested.

Signed-off-by: Roland Dreier <[e-mail]>

drivers/infiniband/hw/nes/nes_cm.c

···
 		return rc;
 	}
 
-	if (netif_is_bond_slave(netdev))
+	if (netif_is_bond_slave(nesvnic->netdev))
 		netdev = nesvnic->netdev->master;
 	else
 		netdev = nesvnic->netdev;