lkl: tests: handler lkl_init failures

Check lkl_init for failures. Print the log buffer in case of failures,
to make debugging easier.

Signed-off-by: Octavian Purdila <tavip@google.com>

Author: tavip

tools/lkl/tests/boot.c

@@ -780,7 +780,10 @@ int main(int argc, const char **argv)
 
 	lkl_host_ops.print = lkl_test_log;
 
-	lkl_init(&lkl_host_ops);
+	if (lkl_init(&lkl_host_ops) < 0) {
+		printf("%s\n", lkl_test_get_log());
+		return 1;
+	}
 
 	ret = lkl_test_run(tests, sizeof(tests)/sizeof(struct lkl_test),
 			"boot");

tools/lkl/tests/disk-vfio-pci.c

@@ -109,7 +109,10 @@ int main(int argc, const char **argv)
 
 	lkl_host_ops.print = lkl_test_log;
 
-	lkl_init(&lkl_host_ops);
+	if (lkl_init(&lkl_host_ops) < 0) {
+		printf("%s\n", lkl_test_get_log());
+		return 1;
+	}
 
 	ret = lkl_test_run(tests, sizeof(tests) / sizeof(struct lkl_test),
 			"disk-vfio-pci %s", cla.fstype);

tools/lkl/tests/disk.c

@@ -189,7 +189,10 @@ int main(int argc, const char **argv)
 
 	lkl_host_ops.print = lkl_test_log;
 
-	lkl_init(&lkl_host_ops);
+	if (lkl_init(&lkl_host_ops) < 0) {
+		printf("%s\n", lkl_test_get_log());
+		return 1;
+	}
 
 	ret = lkl_test_run(tests, sizeof(tests)/sizeof(struct lkl_test),
 			"disk %s", cla.fstype);