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, 4 insertions, 0 deletions

diff --git a/drivers/mtd/maps/ebony.c b/drivers/mtd/maps/ebony.c
index 641e1dd8479e..1488bb92f26f 100644
--- a/drivers/mtd/maps/ebony.c
+++ b/drivers/mtd/maps/ebony.c
@@ -108,6 +108,7 @@ int __init init_ebony(void)
                                         ARRAY_SIZE(ebony_small_partitions));
         } else {
                 printk("map probe failed for flash\n");
+                iounmap(ebony_small_map.virt);
                 return -ENXIO;
         }
 
@@ -117,6 +118,7 @@ int __init init_ebony(void)
 
         if (!ebony_large_map.virt) {
                 printk("Failed to ioremap flash\n");
+                iounmap(ebony_small_map.virt);
                 return -EIO;
         }
 
@@ -129,6 +131,8 @@ int __init init_ebony(void)
                                         ARRAY_SIZE(ebony_large_partitions));
         } else {
                 printk("map probe failed for flash\n");
+                iounmap(ebony_small_map.virt);
+                iounmap(ebony_large_map.virt);
                 return -ENXIO;
         }