mtd: remove some duplicative checks

"rc" is an error code here, no need to check it a second time.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

drivers/mtd/rfd_ftl.c

@@ -602,7 +602,6 @@ static int mark_sector_deleted(struct partition *part, u_long old_addr)
 	if (rc) {
 		printk(KERN_ERR PREFIX "error writing '%s' at "
 			"0x%lx\n", part->mbd.mtd->name, addr);
-		if (rc)
 		goto err;
 	}
 	if (block == part->current_block)
@@ -675,7 +674,6 @@ static int do_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf,
 	if (rc) {
 		printk(KERN_ERR PREFIX "error writing '%s' at 0x%lx\n",
 				part->mbd.mtd->name, addr);
-		if (rc)
 		goto err;
 	}
 
@@ -695,7 +693,6 @@ static int do_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf,
 	if (rc) {
 		printk(KERN_ERR PREFIX "error writing '%s' at 0x%lx\n",
 				part->mbd.mtd->name, addr);
-		if (rc)
 		goto err;
 	}
 	block->used_sectors++;