tc-testing: fix arg to ip command: -s -> -n

Fixes: 31c2611b66e0 ("selftests: Introduce a new test case to tc testsuite")
Fixes: 76b903ee198d ("selftests: Introduce tc testsuite")
Signed-off-by: Brenda J. Butler <bjb@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/tools/testing/selftests/tc-testing/tdc.py b/tools/testing/selftests/tc-testing/tdc.py
index 5f11f5d..a8981c5 100755
--- a/tools/testing/selftests/tc-testing/tdc.py
+++ b/tools/testing/selftests/tc-testing/tdc.py
@@ -152,11 +152,11 @@
         exec_cmd(cmd, False)
         cmd = 'ip link set $DEV0 up'
         exec_cmd(cmd, False)
-        cmd = 'ip -s $NS link set $DEV1 up'
+        cmd = 'ip -n $NS link set $DEV1 up'
         exec_cmd(cmd, False)
         cmd = 'ip link set $DEV2 netns $NS'
         exec_cmd(cmd, False)
-        cmd = 'ip -s $NS link set $DEV2 up'
+        cmd = 'ip -n $NS link set $DEV2 up'
         exec_cmd(cmd, False)