kms: Also try other nodes for dmabuf import

src/backend/kms/mod.rs

@@ -1584,13 +1584,17 @@ impl KmsState {
         global: &DmabufGlobal,
         dmabuf: Dmabuf,
     ) -> Result<DrmNode> {
-        for device in self.devices.values_mut() {
+        let (expected_node, other_nodes) =
-            if device
+            self.devices.values_mut().partition::<Vec<_>, _>(|device| {
+                device
                     .socket
                     .as_ref()
                     .map(|s| &s.dmabuf_global == global)
                     .unwrap_or(false)
-            {
+            });
+
+        let mut last_err = anyhow::anyhow!("Dmabuf cannot be imported on any gpu");
+        for device in expected_node.into_iter().chain(other_nodes.into_iter()) {
             if device.render_node != self.primary_node {
                 if !device.in_use(&self.primary_node) {
                     self.api
@@ -1609,15 +1613,27 @@ impl KmsState {
                 }
             }
 
-                return self
+            let result = self
                 .api
                 .single_renderer(&device.render_node)?
                 .import_dmabuf(&dmabuf, None)
                 .map(|_| device.render_node)
                 .map_err(Into::into);
+
+            match result {
+                Ok(node) => return Ok(node),
+                Err(err) => {
+                    trace!(?err, "Failed to import dmabuf on {:?}", device.render_node);
+                    last_err = err;
+
+                    if !device.in_use(&self.primary_node) {
+                        self.api.as_mut().remove_node(&device.render_node);
                     }
                 }
-        unreachable!()
+            };
+        }
+
+        Err(last_err)
     }
 
     pub fn schedule_render(