[PATCH] drm/mxsfb: fix missing rollback on failure in mxsfb_probe()

[Luca Ceresoli <luca.ceresoli@bootlin.com>]

When aperture_remove_all_conflicting_devices() fails, the current code
returns without going through the rollback actions at the end of the
function, thus the actions done by drm_dev_alloc() and mxsfb_load() are not
undone.

Fix by using a goto statament, as done for the previous and following error
conditions.

Fixes: c8e7b185d45b ("drm/mxsfb: Remove generic DRM drivers in probe function")
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
---
The offending commit is not yet merged into master, and even less in a
released kernel, so this does not need to go through stable.
---
 drivers/gpu/drm/mxsfb/mxsfb_drv.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
index c183b1112bc4e9fe4f3b048a2b6e4c98d1d47cb3..b4273e678d26dbc3dee2014266d61470da4e8010 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
@@ -365,9 +365,10 @@ static int mxsfb_probe(struct platform_device *pdev)
 	 * located anywhere in RAM
 	 */
 	ret = aperture_remove_all_conflicting_devices(mxsfb_driver.name);
-	if (ret)
-		return dev_err_probe(&pdev->dev, ret,
-				     "can't kick out existing framebuffers\n");
+	if (ret) {
+		dev_err_probe(&pdev->dev, ret, "can't kick out existing framebuffers\n");
+		goto err_unload;
+	}
 
 	ret = drm_dev_register(drm, 0);
 	if (ret)

---
base-commit: f9f087d946266bc5da7c3a17bd8fd9d01969e3cf
change-id: 20250313-mxsfb_probe-fix-rollback-on-error-3074b9080f34

Best regards,
-- 
Luca Ceresoli <luca.ceresoli@bootlin.com>