[PATCH 6.12 0849/1102] vdpa: solidrun: Free IRQs after request failure

6.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Xiong Weimin <redacted>

commit e847542ab0545c73354849126150206c29d83929 upstream.

Unwind IRQs already requested by snet_request_irqs() before returning a
VQ IRQ request error so a later DRIVER_OK retry starts from a clean
state. The IRQs are requested and freed while the PCI device remains
bound, so the driver cannot wait for devres cleanup at detach time.

Fixes: 51a8f9d7f587 ("virtio: vdpa: new SolidNET DPU driver.")
Cc: stable@vger.kernel.org # v6.3+
Signed-off-by: Xiong Weimin <redacted>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: [ref]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/vdpa/solidrun/snet_main.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- a/drivers/vdpa/solidrun/snet_main.c
+++ b/drivers/vdpa/solidrun/snet_main.c

@@ -418,11 +418,15 @@ static int snet_request_irqs(struct pci_
 				       snet->vqs[i]->irq_name, snet->vqs[i]);
 		if (ret) {
 			SNET_ERR(pdev, "Failed to request IRQ\n");
-			return ret;
+			goto err_free_irqs;
 		}
 		snet->vqs[i]->irq = irq;
 	}
 	return 0;
+
+err_free_irqs:
+	snet_free_irqs(snet);
+	return ret;
 }
 
 static void snet_set_status(struct vdpa_device *vdev, u8 status)