tpm: fix: return rc when devm_add_action() fails

[ Upstream commit 4f3b193d ]

Call put_device() and return error code if devm_add_action() fails.
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reported-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Fixes: 8e0ee3c9 ("tpm: fix the cleanup of struct tpm_chip")
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/char/tpm/tpm-chip.c

@@ -230,7 +230,11 @@ struct tpm_chip *tpmm_chip_alloc(struct device *dev,
 	chip->cdev.owner = dev->driver->owner;
 	chip->cdev.kobj.parent = &chip->dev.kobj;
 
-	devm_add_action(dev, (void (*)(void *)) put_device, &chip->dev);
+	rc = devm_add_action(dev, (void (*)(void *)) put_device, &chip->dev);
+	if (rc) {
+		put_device(&chip->dev);
+		return ERR_PTR(rc);
+	}
 
 	return chip;
 }