Use the warn_on_err macro in the unbind sequence, and refactor it to
early-exit during the failure path as we will need to use the bar for
other purposes.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---
 drivers/gpu/nova-core/gpu.rs | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/nova-core/gpu.rs b/drivers/gpu/nova-core/gpu.rs
index 629c9d2dc994..e16d3c2a6b38 100644
--- a/drivers/gpu/nova-core/gpu.rs
+++ b/drivers/gpu/nova-core/gpu.rs
@@ -293,10 +293,10 @@ pub(crate) fn new<'a>(
     ///
     /// Note: This method must only be called from `Driver::unbind`.
     pub(crate) fn unbind(&self, dev: &device::Device<device::Core>) {
-        kernel::warn_on!(self
-            .bar
-            .access(dev)
-            .inspect(|bar| self.sysmem_flush.unregister(bar))
-            .is_err());
+        let Ok(bar) = kernel::warn_on_err!(self.bar.access(dev)) else {
+            return;
+        };
+
+        self.sysmem_flush.unregister(bar);
     }
 }

-- 
2.52.0