[PATCH] vduse: Fix missing error code in vduse_init()

[Jiapeng Chong]

From: chongjiapeng <jiapeng.chong@xxxxxxxxxxxxxxxxx>

The error code is missing in this code scenario, add the error code
'-EINVAL' to the return value 'ret'.

Eliminate the follow smatch warning:

drivers/vdpa/vdpa_user/vduse_dev.c:1597 vduse_init() warn: missing error
code 'ret'.

Reported-by: Abaci Robot <abaci@xxxxxxxxxxxxxxxxx>
Fixes: c8a6153b6c59 ("vduse: Introduce VDUSE - vDPA Device in Userspace")
Signed-off-by: chongjiapeng <jiapeng.chong@xxxxxxxxxxxxxxxxx>
---
 drivers/vdpa/vdpa_user/vduse_dev.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/vdpa/vdpa_user/vduse_dev.c b/drivers/vdpa/vdpa_user/vduse_dev.c
index 5c25ff6..6a8878d 100644
--- a/drivers/vdpa/vdpa_user/vduse_dev.c
+++ b/drivers/vdpa/vdpa_user/vduse_dev.c
@@ -1593,8 +1593,10 @@ static int vduse_init(void)
 
 	vduse_irq_wq = alloc_workqueue("vduse-irq",
 				WQ_HIGHPRI | WQ_SYSFS | WQ_UNBOUND, 0);
-	if (!vduse_irq_wq)
+	if (!vduse_irq_wq) {
+		ret = -EINVAL;
 		goto err_wq;
+	}
 
 	ret = vduse_domain_init();
 	if (ret)
-- 
1.8.3.1