Jacek Caban : ntoskrnl.exe: Don' t add device to the list if IoCreateDevice fails.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 80d53026bf22a11aafaf3c4ba8fab6b1fe3b6cb0
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=80d53026bf22a11aafaf3c4ba8fab6b1fe3b6cb0

Author: Jacek Caban <jacek at codeweavers.com>
Date:   Mon Apr  8 14:03:27 2019 +0200

ntoskrnl.exe: Don't add device to the list if IoCreateDevice fails.

Spotted by Zebediah Figura.

Signed-off-by: Jacek Caban <jacek at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/ntoskrnl.exe/ntoskrnl.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/dlls/ntoskrnl.exe/ntoskrnl.c b/dlls/ntoskrnl.exe/ntoskrnl.c
index c1a74f1..804c7f6 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.c
+++ b/dlls/ntoskrnl.exe/ntoskrnl.c
@@ -1502,9 +1502,6 @@ NTSTATUS WINAPI IoCreateDevice( DRIVER_OBJECT *driver, ULONG ext_size,
     device->DeviceType      = type;
     device->StackSize       = 1;
 
-    device->NextDevice   = driver->DeviceObject;
-    driver->DeviceObject = device;
-
     SERVER_START_REQ( create_device )
     {
         req->rootdir    = 0;
@@ -1521,6 +1518,9 @@ NTSTATUS WINAPI IoCreateDevice( DRIVER_OBJECT *driver, ULONG ext_size,
         return status;
     }
 
+    device->NextDevice   = driver->DeviceObject;
+    driver->DeviceObject = device;
+
     *ret_device = device;
     return STATUS_SUCCESS;
 }