regmap: kunit: Replace a kmalloc/kfree() pair with KUnit-managed alloc

Replace the kmalloc() and kfree() in raw_read_defaults() with a
kunit_kmalloc() so that KUnit will free it automatically.
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://msgid.link/r/20240408144600.230848-10-rf@opensource.cirrus.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/base/regmap/regmap-kunit.c

@@ -1360,7 +1360,7 @@ static void raw_read_defaults(struct kunit *test)
 		return;
 
 	val_len = sizeof(*rval) * (config.max_register + 1);
-	rval = kmalloc(val_len, GFP_KERNEL);
+	rval = kunit_kmalloc(test, val_len, GFP_KERNEL);
 	KUNIT_ASSERT_TRUE(test, rval != NULL);
 	if (!rval)
 		return;
@@ -1375,8 +1375,6 @@ static void raw_read_defaults(struct kunit *test)
 			KUNIT_EXPECT_EQ(test, def, le16_to_cpu((__force __le16)rval[i]));
 		}
 	}
-
-	kfree(rval);
 }
 
 static void raw_write_read_single(struct kunit *test)