[PATCH 6.19 744/844] mux: mmio: fix regmap leak on probe failure

[Sasha Levin]

From: Johan Hovold <johan@xxxxxxxxxx>

[ Upstream commit 3c4ae63073d84abee5d81ce46d86a94e9dae9c89 ]

The mmio regmap that may be allocated during probe is never freed.

Switch to using the device managed allocator so that the regmap is
released on probe failures (e.g. probe deferral) and on driver unbind.

Fixes: 61de83fd8256 ("mux: mmio: Do not use syscon helper to build regmap")
Cc: stable@xxxxxxxxxxxxxxx	# 6.16
Cc: Andrew Davis <afd@xxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Acked-by: Andrew Davis <afd@xxxxxx>
Link: https://patch.msgid.link/20251127134702.1915-1-johan@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/mux/mmio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mux/mmio.c b/drivers/mux/mmio.c
index 3409af1ffb80f..0611ef28bb69a 100644
--- a/drivers/mux/mmio.c
+++ b/drivers/mux/mmio.c
@@ -72,7 +72,7 @@ static int mux_mmio_probe(struct platform_device *pdev)
 		if (IS_ERR(base))
 			regmap = ERR_PTR(-ENODEV);
 		else
-			regmap = regmap_init_mmio(dev, base, &mux_mmio_regmap_cfg);
+			regmap = devm_regmap_init_mmio(dev, base, &mux_mmio_regmap_cfg);
 		/* Fallback to checking the parent node on "real" errors. */
 		if (IS_ERR(regmap) && regmap != ERR_PTR(-EPROBE_DEFER)) {
 			regmap = dev_get_regmap(dev->parent, NULL);
-- 
2.51.0