omap iommu: Fix Memory leak

The memory allocated for sgt structure is not freed on error
when sg_alloc_table is called in sgtable_alloc().

Signed-off-by: Satish Kumar <x0124230@ti.com>
Signed-off-by: Manjunatha GK <manjugk@ti.com>
Cc: Vimal Singh <vimal.newwork@gmail.com>
Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: Tony Lindgen <tony@atomide.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/arch/arm/plat-omap/iovmm.c b/arch/arm/plat-omap/iovmm.c
index e43983ba59c5..8ce0de247c71 100644
--- a/arch/arm/plat-omap/iovmm.c
+++ b/arch/arm/plat-omap/iovmm.c
@@ -140,8 +140,10 @@ static struct sg_table *sgtable_alloc(const size_t bytes, u32 flags)
                 return ERR_PTR(-ENOMEM);
 
         err = sg_alloc_table(sgt, nr_entries, GFP_KERNEL);
-        if (err)
+        if (err) {
+                kfree(sgt);
                 return ERR_PTR(err);
+        }
 
         pr_debug("%s: sgt:%p(%d entries)\n", __func__, sgt, nr_entries);