mtd: rawnand: Get rid of chip->chipsize

The target size can now be returned by nanddev_get_targetsize(). Get
rid of the chip->chipsize field and use this helper instead.

Signed-off-by: Boris Brezillon <bbrezillon@kernel.org>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c
index bf54733..0f86dd2 100644
--- a/drivers/mtd/nand/raw/nandsim.c
+++ b/drivers/mtd/nand/raw/nandsim.c
@@ -2305,6 +2305,7 @@ static int __init ns_init_module(void)
 	if (overridesize) {
 		uint64_t new_size = (uint64_t)nsmtd->erasesize << overridesize;
 		struct nand_memory_organization *memorg;
+		u64 targetsize;
 
 		memorg = nanddev_get_memorg(&chip->base);
 
@@ -2313,12 +2314,13 @@ static int __init ns_init_module(void)
 			retval = -EINVAL;
 			goto err_exit;
 		}
+
 		/* N.B. This relies on nand_scan not doing anything with the size before we change it */
 		nsmtd->size = new_size;
 		memorg->eraseblocks_per_lun = 1 << overridesize;
-		chip->chipsize = new_size;
+		targetsize = nanddev_target_size(&chip->base);
 		chip->chip_shift = ffs(nsmtd->erasesize) + overridesize - 1;
-		chip->pagemask = (chip->chipsize >> chip->page_shift) - 1;
+		chip->pagemask = (targetsize >> chip->page_shift) - 1;
 	}
 
 	if ((retval = setup_wear_reporting(nsmtd)) != 0)