From: Yishai Hadas <yishaih@nvidia.com>
Date: Wed, 9 Mar 2022 10:02:17 +0200
Subject: vfio/mlx5: Fix to not use 0 as NULL pointer
Git-commit: 5b26f2c249b1034ab327dd29e73fec078d0ece18
Patch-mainline: v5.18-rc1
References: bsc#1205701

Fix sparse warning to not use plain integer (i.e. 0) as NULL pointer.

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 6fadb021266d ("vfio/mlx5: Implement vfio_pci driver for mlx5 devices")
Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Link: https://lore.kernel.org/r/202203090703.kxvZumJg-lkp@intel.com
Link: https://lore.kernel.org/r/20220309080217.94274-1-yishaih@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Joerg Roedel <jroedel@suse.de>
---
 drivers/vfio/pci/mlx5/main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/vfio/pci/mlx5/main.c b/drivers/vfio/pci/mlx5/main.c
index 282a9d4bf776..bbec5d288fee 100644
--- a/drivers/vfio/pci/mlx5/main.c
+++ b/drivers/vfio/pci/mlx5/main.c
@@ -409,7 +409,7 @@ mlx5vf_pci_step_device_state_locked(struct mlx5vf_pci_core_device *mvdev,
 
 	if ((cur == VFIO_DEVICE_STATE_STOP_COPY && new == VFIO_DEVICE_STATE_STOP)) {
 		mlx5vf_disable_fds(mvdev);
-		return 0;
+		return NULL;
 	}
 
 	if (cur == VFIO_DEVICE_STATE_STOP && new == VFIO_DEVICE_STATE_RESUMING) {
@@ -430,7 +430,7 @@ mlx5vf_pci_step_device_state_locked(struct mlx5vf_pci_core_device *mvdev,
 		if (ret)
 			return ERR_PTR(ret);
 		mlx5vf_disable_fds(mvdev);
-		return 0;
+		return NULL;
 	}
 
 	/*