[PATCH 2/9] RDMA/hfi2: Preserve unit 0 on allocation failure

When xa_alloc_irq() fails in hfi2_alloc_devdata(), the unit number
(default 0) remains unchanged. Directly jumping to the common cleanup
path incorrectly erases unit 0 from the xarray. Bail directly without
calling hfi2_free_devdata() instead. Matches hfi1 fix 2e3809ad8911.

Assisted-by: Claude:claude-sonnet-4-5
Signed-off-by: Dennis Dalessandro <[email protected]>
---
 drivers/infiniband/hw/hfi2/init.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/hfi2/init.c b/drivers/infiniband/hw/hfi2/init.c
index 5b859ae7ae1e..2f2b116e9c57 100644
--- a/drivers/infiniband/hw/hfi2/init.c
+++ b/drivers/infiniband/hw/hfi2/init.c
@@ -2045,7 +2045,8 @@ static struct hfi2_devdata *hfi2_alloc_devdata(struct pci_dev *pdev,
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Could not allocate unit ID: error %d\n",
 			-ret);
-		goto bail;
+		rvt_dealloc_device(&dd->verbs_dev.rdi);
+		return ERR_PTR(ret);
 	}
 	dev_set_name(&dd->verbs_dev.rdi.ibdev.dev, "%s_%d", "hfi2", dd->unit);
 	strscpy(dd->verbs_dev.rdi.ibdev.name,