iommu/vt-d: Remove unnecessary braces

No need for braces for single line statement under if() block.
Signed-off-by: NParav Pandit <parav@nvidia.com>
Signed-off-by: NLu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210530075053.264218-1-parav@nvidia.com
Link: https://lore.kernel.org/r/20210610020115.1637656-22-baolu.lu@linux.intel.comSigned-off-by: NJoerg Roedel <jroedel@suse.de>

drivers/iommu/intel/iommu.c

@@ -683,9 +683,8 @@ static int domain_update_iommu_superpage(struct dmar_domain *domain,
 	struct intel_iommu *iommu;
 	int mask = 0x3;
 
-	if (!intel_iommu_superpage) {
+	if (!intel_iommu_superpage)
 		return 0;
-	}
 
 	/* set iommu_superpage to the smallest common denominator */
 	rcu_read_lock();