staging: lustre: lnet: selftest: mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lnet/selftest/module.c

@@ -57,10 +57,13 @@ lnet_selftest_exit(void)
 	switch (lst_init_step) {
 	case LST_INIT_CONSOLE:
 		lstcon_console_fini();
+		/* fall through */
 	case LST_INIT_FW:
 		sfw_shutdown();
+		/* fall through */
 	case LST_INIT_RPC:
 		srpc_shutdown();
+		/* fall through */
 	case LST_INIT_WI_TEST:
 		for (i = 0;
 		     i < cfs_cpt_number(lnet_cpt_table()); i++) {
@@ -72,7 +75,7 @@ lnet_selftest_exit(void)
 			    sizeof(lst_sched_test[0]) *
 			    cfs_cpt_number(lnet_cpt_table()));
 		lst_sched_test = NULL;
-
+		/* fall through */
 	case LST_INIT_WI_SERIAL:
 		cfs_wi_sched_destroy(lst_sched_serial);
 		lst_sched_serial = NULL;