IB/hfi1: Fix a memleak in init_credit_return

[ Upstream commit 809aa64ebff51eb170ee31a95f83b2d21efa32e2 ]

When dma_alloc_coherent fails to allocate dd->cr_base[i].va,
init_credit_return should deallocate dd->cr_base and
dd->cr_base[i] that allocated before. Or those resources
would be never freed and a memleak is triggered.

Fixes: 7724105686e7 ("IB/hfi1: add driver files")
Signed-off-by: Zhipeng Lu <alexious@zju.edu.cn>
Link: https://lore.kernel.org/r/20240112085523.3731720-1-alexious@zju.edu.cn
Acked-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/infiniband/hw/hfi1/pio.c b/drivers/infiniband/hw/hfi1/pio.c
index 51ae58c02b15c76d2919e2059dcbcdb02ead7fd3..802b0e5801a7dbbffdc124943e1ca44239010bb2 100644 (file)
--- a/drivers/infiniband/hw/hfi1/pio.c
+++ b/drivers/infiniband/hw/hfi1/pio.c
@@ -2089,7 +2089,7 @@ int init_credit_return(struct hfi1_devdata *dd)
                                   "Unable to allocate credit return DMA range for NUMA %d\n",
                                   i);
                        ret = -ENOMEM;
-                       goto done;
+                       goto free_cr_base;
                }
        }
        set_dev_node(&dd->pcidev->dev, dd->node);
@@ -2097,6 +2097,10 @@ int init_credit_return(struct hfi1_devdata *dd)
        ret = 0;
 done:
        return ret;
+
+free_cr_base:
+       free_credit_return(dd);
+       goto done;
 }
 
 void free_credit_return(struct hfi1_devdata *dd)