[PATCH 6.1 214/217] misc: microchip: pci1xxxx: Fix a memory leak in the error handling of gp_aux_bus_probe()

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

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

From: Yongzhi Liu <hyperlyzcs@xxxxxxxxx>

[ Upstream commit 77427e3d5c353e3dd98c7c0af322f8d9e3131ace ]

There is a memory leak (forget to free allocated buffers) in a
memory allocation failure path.

Fix it to jump to the correct error handling code.

Fixes: 393fc2f5948f ("misc: microchip: pci1xxxx: load auxiliary bus driver for the PIO function in the multi-function endpoint of pci1xxxx device.")
Signed-off-by: Yongzhi Liu <hyperlyzcs@xxxxxxxxx>
Reviewed-by: Kumaravel Thiagarajan <kumaravel.thiagarajan@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240523121434.21855-4-hyperlyzcs@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.c b/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.c
index de75d89ef53e8..34c9be437432a 100644
--- a/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.c
+++ b/drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.c
@@ -69,8 +69,10 @@ static int gp_aux_bus_probe(struct pci_dev *pdev, const struct pci_device_id *id
 
 	aux_bus->aux_device_wrapper[1] = kzalloc(sizeof(*aux_bus->aux_device_wrapper[1]),
 						 GFP_KERNEL);
-	if (!aux_bus->aux_device_wrapper[1])
-		return -ENOMEM;
+	if (!aux_bus->aux_device_wrapper[1]) {
+		retval =  -ENOMEM;
+		goto err_aux_dev_add_0;
+	}
 
 	retval = ida_alloc(&gp_client_ida, GFP_KERNEL);
 	if (retval < 0)
-- 
2.43.0







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