regmap: irq: Free the regmap-irq mutex

JIRA: https://issues.redhat.com/browse/RHEL-109251
Conflicts:
	drivers/base/regmap/regmap-irq.c - two
stanzas changed err_alloc to err_mutex did not apply.
I ensured that all instances of err_alloc after the
creation the mutex were changed to err_mutex

commit 1da3385
Author: Mark Brown <broonie@kernel.org>
Date: Fri, 01 Aug 2025 13:37:06 +0000

We do not currently free the mutex allocated by regmap-irq, do so.

Tested-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://patch.msgid.link/20250731-regmap-irq-nesting-v1-1-98b4d1bf20f0@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Mark Langsdorf <mlangsdo@redhat.com>

Author: mlangsdorf

drivers/base/regmap/regmap-irq.c

@@ -767,7 +767,7 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 						     d->mask_buf[i],
 						     chip->irq_drv_data);
 			if (ret)
-				goto err_alloc;
+				goto err_mutex;
 		}
 
 		if (chip->mask_base && !chip->handle_mask_sync) {
@@ -778,7 +778,7 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 			if (ret) {
 				dev_err(map->dev, "Failed to set masks in 0x%x: %d\n",
 					reg, ret);
-				goto err_alloc;
+				goto err_mutex;
 			}
 		}
 
@@ -789,7 +789,7 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 			if (ret) {
 				dev_err(map->dev, "Failed to set masks in 0x%x: %d\n",
 					reg, ret);
-				goto err_alloc;
+				goto err_mutex;
 			}
 		}
 
@@ -806,7 +806,7 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 			if (ret != 0) {
 				dev_err(map->dev, "Failed to read IRQ status: %d\n",
 					ret);
-				goto err_alloc;
+				goto err_mutex;
 			}
 		}
 
@@ -830,7 +830,7 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 			if (ret != 0) {
 				dev_err(map->dev, "Failed to ack 0x%x: %d\n",
 					reg, ret);
-				goto err_alloc;
+				goto err_mutex;
 			}
 		}
 	}
@@ -852,7 +852,7 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 			if (ret != 0) {
 				dev_err(map->dev, "Failed to set masks in 0x%x: %d\n",
 					reg, ret);
-				goto err_alloc;
+				goto err_mutex;
 			}
 		}
 	}
@@ -867,7 +867,7 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 	if (!d->domain) {
 		dev_err(map->dev, "Failed to create IRQ domain\n");
 		ret = -ENOMEM;
-		goto err_alloc;
+		goto err_mutex;
 	}
 
 	ret = request_threaded_irq(irq, NULL, regmap_irq_thread,
@@ -885,6 +885,8 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 
 err_domain:
 	/* Should really dispose of the domain but... */
+err_mutex:
+	mutex_destroy(&d->lock);
 err_alloc:
 	kfree(d->type_buf);
 	kfree(d->type_buf_def);
@@ -975,6 +977,7 @@ void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *d)
 			kfree(d->config_buf[i]);
 		kfree(d->config_buf);
 	}
+	mutex_destroy(&d->lock);
 	kfree(d);
 }
 EXPORT_SYMBOL_GPL(regmap_del_irq_chip);