mtd: nand: Fix nanddev_neraseblocks()

nanddev_neraseblocks() currently returns the number pages per LUN
instead of the total number of eraseblocks.

Fixes: 9c3736a3 ("mtd: nand: Add core infrastructure to deal with NAND devices")
Cc: <stable@vger.kernel.org>
Signed-off-by: NBoris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: NMiquel Raynal <miquel.raynal@bootlin.com>

include/linux/mtd/nand.h

@@ -324,9 +324,8 @@ static inline unsigned int nanddev_ntargets(const struct nand_device *nand)
  */
 static inline unsigned int nanddev_neraseblocks(const struct nand_device *nand)
 {
-	return (u64)nand->memorg.luns_per_target *
-	       nand->memorg.eraseblocks_per_lun *
-	       nand->memorg.pages_per_eraseblock;
+	return nand->memorg.ntargets * nand->memorg.luns_per_target *
+	       nand->memorg.eraseblocks_per_lun;
 }
 
 /**