regcache: Factor out regcache_hw_exit() helper

Factor out regcache_hw_exit() helper to make error and exit paths
clearer. This helps to avoid missing changes in case the code gets
shuffled in the future.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260303092820.2818138-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: andy-shev

drivers/base/regmap/regcache.c

@@ -131,6 +131,13 @@ static int regcache_hw_init(struct regmap *map, int count)
 	return ret;
 }
 
+static void regcache_hw_exit(struct regmap *map)
+{
+	kfree(map->reg_defaults);
+	if (map->cache_free)
+		kfree(map->reg_defaults_raw);
+}
+
 int regcache_init(struct regmap *map, const struct regmap_config *config)
 {
 	int count = 0;
@@ -245,9 +252,7 @@ int regcache_init(struct regmap *map, const struct regmap_config *config)
 		map->unlock(map->lock_arg);
 	}
 err_free:
-	kfree(map->reg_defaults);
-	if (map->cache_free)
-		kfree(map->reg_defaults_raw);
+	regcache_hw_exit(map);
 
 	return ret;
 }
@@ -259,9 +264,7 @@ void regcache_exit(struct regmap *map)
 
 	BUG_ON(!map->cache_ops);
 
-	kfree(map->reg_defaults);
-	if (map->cache_free)
-		kfree(map->reg_defaults_raw);
+	regcache_hw_exit(map);
 
 	if (map->cache_ops->exit) {
 		dev_dbg(map->dev, "Destroying %s cache\n",