Revert "regmap: detach regmap from dev on regmap_exit"

This reverts commit f373a189817584d0af5f922e91cad40e45f12314 which is
commit 3061e17 upstream.

It was backported incorrectly, a fixed version will be applied later.

Cc: Cosmin Tanislav <[email protected]>
Cc: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reported-by: Tzung-Bi Shih <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
(cherry picked from commit e667d5d566a2c17b85188a4023de615b0922a8dc)
FOF: 0225
Signed-off-by: Brian Maly <[email protected]>

Author: gregkh

drivers/base/regmap/regmap.c

@@ -663,17 +663,6 @@ int regmap_attach_dev(struct device *dev, struct regmap *map,
 }
 EXPORT_SYMBOL_GPL(regmap_attach_dev);
 
-static int dev_get_regmap_match(struct device *dev, void *res, void *data);
-
-static int regmap_detach_dev(struct device *dev, struct regmap *map)
-{
-	if (!dev)
-		return 0;
-
-	return devres_release(dev, dev_get_regmap_release,
-			      dev_get_regmap_match, (void *)map->name);
-}
-
 static enum regmap_endian regmap_get_reg_endian(const struct regmap_bus *bus,
 					const struct regmap_config *config)
 {
@@ -1508,7 +1497,6 @@ int regmap_reinit_cache(struct regmap *map, const struct regmap_config *config)
 {
 	int ret;
 
-	regmap_detach_dev(map->dev, map);
 	regcache_exit(map);
 	regmap_debugfs_exit(map);