[PATCH v2] tools/virtio: virtio_test -h,--help should return directly

[Rong Tao <rtoax@foxmail.com>]

From: Rong Tao <rongtao@cestc.cn>

When we get help information, we should return directly, and we should not
execute test cases. Move the exit() directly into the help() function and
remove it from case '?'.

Signed-off-by: Rong Tao <rongtao@cestc.cn>
---
v2: help(): exit with a value different from 0 (e.g. 2).
v1: https://lore.kernel.org/lkml/tencent_4B5122C4158323A1D1ACA04B3295F1579207@qq.com/
---
 tools/virtio/virtio_test.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/tools/virtio/virtio_test.c b/tools/virtio/virtio_test.c
index 120062f94590..33e17307441f 100644
--- a/tools/virtio/virtio_test.c
+++ b/tools/virtio/virtio_test.c
@@ -327,7 +327,7 @@ const struct option longopts[] = {
 	}
 };
 
-static void help(void)
+static void help(int status)
 {
 	fprintf(stderr, "Usage: virtio_test [--help]"
 		" [--no-indirect]"
@@ -337,6 +337,8 @@ static void help(void)
 		" [--batch=random/N]"
 		" [--reset=N]"
 		"\n");
+
+	exit(status);
 }
 
 int main(int argc, char **argv)
@@ -354,14 +356,12 @@ int main(int argc, char **argv)
 		case -1:
 			goto done;
 		case '?':
-			help();
-			exit(2);
+			help(2);
 		case 'e':
 			features &= ~(1ULL << VIRTIO_RING_F_EVENT_IDX);
 			break;
 		case 'h':
-			help();
-			goto done;
+			help(0);
 		case 'i':
 			features &= ~(1ULL << VIRTIO_RING_F_INDIRECT_DESC);
 			break;
-- 
2.39.1