iommu: Remove duplicate ida_free in iommu_group_alloc

In the iommu_group_alloc, when the kobject_init_and_add
failed, the group->kobj is associate with iommu_group_ktype,
thus its release function iommu_group_release will be called
by the following kobject_put. The iommu_group_release calls
ida_free with the group->id, so we do not need to do it before
kobject_put.
Signed-off-by: NYuan Can <yuancan@huawei.com>
Link: https://lore.kernel.org/r/20220815031423.94548-1-yuancan@huawei.comSigned-off-by: NJoerg Roedel <jroedel@suse.de>

drivers/iommu/iommu.c

@@ -654,7 +654,6 @@ struct iommu_group *iommu_group_alloc(void)
 	ret = kobject_init_and_add(&group->kobj, &iommu_group_ktype,
 				   NULL, "%d", group->id);
 	if (ret) {
-		ida_free(&iommu_group_ida, group->id);
 		kobject_put(&group->kobj);
 		return ERR_PTR(ret);
 	}