vfio/mlx5: Fix to not use 0 as NULL pointer

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>

diff --git a/drivers/vfio/pci/mlx5/main.c b/drivers/vfio/pci/mlx5/main.c
index 282a9d4..bbec5d2 100644 (file)
--- 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;
        }
 
        /*