selftests: devlink: undo changes at the end of resource_test

The netdevsim object is reused by all the tests, but the resource
tests puts it into a broken state (failed reload in a different
namespace). Make sure it's fixed up at the end of that test
otherwise subsequent tests fail.

Fixes: b74c37f ("selftests: netdevsim: add tests for devlink reload with resources")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/drivers/net/netdevsim/devlink.sh

@@ -279,6 +279,12 @@ resource_test()
 	devlink -N testns1 dev reload $DL_HANDLE netns testns2
 	check_fail $? "Unexpected successful reload from netns \"testns1\" into netns \"testns2\""
 
+	devlink -N testns2 resource set $DL_HANDLE path IPv4/fib size ' -1'
+	check_err $? "Failed to reset IPv4/fib resource size"
+
+	devlink -N testns2 dev reload $DL_HANDLE netns 1
+	check_err $? "Failed to reload devlink back"
+
 	ip netns del testns2
 	ip netns del testns1