iommu/vt-d: Remove unnecessary oom message

Fixes scripts/checkpatch.pl warning:
WARNING: Possible unnecessary 'out of memory' message

Remove it can help us save a bit of memory.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20210609124937.14260-1-thunder.leizhen@huawei.comSigned-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210818134852.1847070-3-baolu.lu@linux.intel.comSigned-off-by: Joerg Roedel <jroedel@suse.de>

drivers/iommu/intel/dmar.c

@@ -149,8 +149,6 @@ dmar_alloc_pci_notify_info(struct pci_dev *dev, unsigned long event)
 	} else {
 		info = kzalloc(size, GFP_KERNEL);
 		if (!info) {
-			pr_warn("Out of memory when allocating notify_info "
-				"for %s.\n", pci_name(dev));
 			if (dmar_dev_scope_status == 0)
 				dmar_dev_scope_status = -ENOMEM;
 			return NULL;

drivers/iommu/intel/iommu.c

@@ -1779,11 +1779,8 @@ static int iommu_init_domains(struct intel_iommu *iommu)
 	spin_lock_init(&iommu->lock);
 
 	iommu->domain_ids = kcalloc(nlongs, sizeof(unsigned long), GFP_KERNEL);
-	if (!iommu->domain_ids) {
-		pr_err("%s: Allocating domain id array failed\n",
-		       iommu->name);
+	if (!iommu->domain_ids)
 		return -ENOMEM;
-	}
 
 	size = (ALIGN(ndomains, 256) >> 8) * sizeof(struct dmar_domain **);
 	iommu->domains = kzalloc(size, GFP_KERNEL);
@@ -3224,7 +3221,6 @@ static int __init init_dmars(void)
 	g_iommus = kcalloc(g_num_of_iommus, sizeof(struct intel_iommu *),
 			GFP_KERNEL);
 	if (!g_iommus) {
-		pr_err("Allocating global iommu array failed\n");
 		ret = -ENOMEM;
 		goto error;
 	}