msm: Correctly lookup iommu domains.

Correctly compare against the value in the domain
structure when looking up domains.

Change-Id: Ibeb4ffff4ee14b651797668606a8e81f102b3a19
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
diff --git a/arch/arm/mach-msm/iommu_domains.c b/arch/arm/mach-msm/iommu_domains.c
index 271e252b..9cf16b6 100644
--- a/arch/arm/mach-msm/iommu_domains.c
+++ b/arch/arm/mach-msm/iommu_domains.c
@@ -173,7 +173,7 @@
 		node = rb_entry(p, struct msm_iova_data, node);
 		if (domain_num < node->domain_num)
 			p = p->rb_left;
-		else if (domain_num > domain_num)
+		else if (domain_num > node->domain_num)
 			p = p->rb_right;
 		else {
 			mutex_unlock(&domain_mutex);