[PATCH] tpm: "qemu -tpmdev help" should return success

[marcandre . lureau]

From: Marc-André Lureau <marcandre.lur...@redhat.com>

Like other "-foo help" CLI, the qemu process should return 0 for
"-tpmdev help".

Signed-off-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
 system/tpm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/system/tpm.c b/system/tpm.c
index 8df0f6e72b..5f12a62c4a 100644
--- a/system/tpm.c
+++ b/system/tpm.c
@@ -181,7 +181,7 @@ int tpm_config_parse(QemuOptsList *opts_list, const char 
*optstr)
 
     if (!strcmp(optstr, "help")) {
         tpm_display_backend_drivers();
-        return -1;
+        exit(EXIT_SUCCESS);
     }
     opts = qemu_opts_parse_noisily(opts_list, optstr, true);
     if (!opts) {
-- 
2.50.0