mtd: rawnand: cafe: Fix a resource leak in the error handling path of 'cafe_nand_probe()'

stable inclusion
from stable-5.10.68
commit 9da1fb128c5492fb7204eabf32d2f80575beed23
bugzilla: 182671 https://gitee.com/openeuler/kernel/issues/I4EWUH

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=9da1fb128c5492fb7204eabf32d2f80575beed23

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

[ Upstream commit 6b430c75 ]

A successful 'init_rs_non_canonical()' call should be balanced by a
corresponding 'free_rs()' call in the error handling path of the probe, as
already done in the remove function.

Update the error handling path accordingly.

Fixes: 8c61b7a7 ("[MTD] [NAND] Use rslib for CAFÉ ECC")
Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/fd313d3fb787458bcc73189e349f481133a2cdc9.1629532640.git.christophe.jaillet@wanadoo.frSigned-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Acked-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/mtd/nand/raw/cafe_nand.c

@@ -751,7 +751,7 @@ static int cafe_nand_probe(struct pci_dev *pdev,
 			  "CAFE NAND", mtd);
 	if (err) {
 		dev_warn(&pdev->dev, "Could not register IRQ %d\n", pdev->irq);
-		goto out_ior;
+		goto out_free_rs;
 	}
 
 	/* Disable master reset, enable NAND clock */
@@ -795,6 +795,8 @@ static int cafe_nand_probe(struct pci_dev *pdev,
 	/* Disable NAND IRQ in global IRQ mask register */
 	cafe_writel(cafe, ~1 & cafe_readl(cafe, GLOBAL_IRQ_MASK), GLOBAL_IRQ_MASK);
 	free_irq(pdev->irq, mtd);
+ out_free_rs:
+	free_rs(cafe->rs);
  out_ior:
 	pci_iounmap(pdev, cafe->mmio);
  out_free_mtd: