regcache: Remove duplicate check in regcache_hw_init()

The regcache_hw_init() is never called without preliminary check
for num_reg_defaults_raw not being 0. Thus, remove duplicate in
the function.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260210161058.53093-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: andy-shev

drivers/base/regmap/regcache.c

@@ -50,9 +50,6 @@ static int regcache_hw_init(struct regmap *map)
 	unsigned int reg, val;
 	void *tmp_buf;
 
-	if (!map->num_reg_defaults_raw)
-		return -EINVAL;
-
 	/* calculate the size of reg_defaults */
 	for (count = 0, i = 0; i < map->num_reg_defaults_raw; i++)
 		if (regmap_readable(map, i * map->reg_stride) &&