test_kho: always print restore status

Currently the KHO test only prints a message on success, and remains
silent on failure. This makes it difficult to notice a failing test. A
failing test is usually more interesting than a successful one.

Always print the test status after attempting restore.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Pratyush Yadav <[e-mail]>
Reviewed-by: Pasha Tatashin <[e-mail]>
Reviewed-by: Mike Rapoport (Microsoft) <[e-mail]>
Acked-by: SeongJae Park <[e-mail]>
Cc: Alexander Graf <[e-mail]>
Cc: Pratyush Yadav <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>

lib/test_kho.c

···
 	if (err)
 		return err;
 
-	pr_info("KHO restore succeeded\n");
 	return 0;
 }
 
···
 		return 0;
 
 	err = kho_retrieve_subtree(KHO_TEST_FDT, &fdt_phys);
-	if (!err)
-		return kho_test_restore(fdt_phys);
+	if (!err) {
+		err = kho_test_restore(fdt_phys);
+		if (err)
+			pr_err("KHO restore failed\n");
+		else
+			pr_info("KHO restore succeeded\n");
+
+		return err;
+	}
 
 	if (err != -ENOENT) {
 		pr_warn("failed to retrieve %s FDT: %d\n", KHO_TEST_FDT, err);