ioremap balanced with iounmap for drivers/mtd subsystem

ioremap must be balanced by an iounmap and failing to do so can result
in a memory leak.

Tested (compilation only) with:
- allmodconfig
- Modifying drivers/mtd/maps/Kconfig and drivers/mtd/nand/Kconfig to
make sure that the changed file is compiling without warning

Signed-off-by: Amol Lad <amol@verismonetworks.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/mtd/maps/lasat.c b/drivers/mtd/maps/lasat.c
index 1c13d2dc0cd..e3437632105 100644
--- a/drivers/mtd/maps/lasat.c
+++ b/drivers/mtd/maps/lasat.c
@@ -79,6 +79,7 @@ static int __init init_lasat(void)
 		return 0;
 	}
 
+	iounmap(lasat_map.virt);
 	return -ENXIO;
 }
 
@@ -89,6 +90,7 @@ static void __exit cleanup_lasat(void)
 		map_destroy(lasat_mtd);
 	}
 	if (lasat_map.virt) {
+		iounmap(lasat_map.virt);
 		lasat_map.virt = 0;
 	}
 }