Fix Iterative regions in AWS (#336)

* Fix Iterative regions in AWS

* missing error

* restore subnet code

Author: DavidGOrtega

iterative/aws/provider.go

@@ -26,7 +26,6 @@ func ResourceMachineCreate(ctx context.Context, d *schema.ResourceData, m interf
 	userData := d.Get("startup_script").(string)
 	pairName := d.Id()
 	hddSize := d.Get("instance_hdd_size").(int)
-	region := GetRegion(d.Get("region").(string))
 	instanceType := getInstanceType(d.Get("instance_type").(string), d.Get("instance_gpu").(string))
 	ami := d.Get("image").(string)
 	keyPublic := d.Get("ssh_public").(string)
@@ -35,7 +34,9 @@ func ResourceMachineCreate(ctx context.Context, d *schema.ResourceData, m interf
 	spotPrice := d.Get("spot_price").(float64)
 	instanceProfile := d.Get("instance_permission_set").(string)
 	subnetId := d.Get("aws_subnet_id").(string)
-	availabilityZone := GetAvailabilityZone(d.Get("region").(string))
+
+	region := GetRegion(d.Get("region").(string))
+	availabilityZone := GetAvailabilityZone(region)
 
 	metadata := map[string]string{
 		"Name": d.Get("name").(string),
@@ -417,14 +418,6 @@ func awsClient(region string) (aws.Config, error) {
 	)
 }
 
-func GetAvailabilityZone(region string) string {
-	lastChar := region[len(region)-1]
-	if lastChar >= 'a' && lastChar <= 'z' {
-		return region
-	}
-	return ""
-}
-
 //GetRegion maps region to real cloud regions
 func GetRegion(region string) string {
 	instanceRegions := make(map[string]string)
@@ -439,6 +432,14 @@ func GetRegion(region string) string {
 	return utils.StripAvailabilityZone(region)
 }
 
+func GetAvailabilityZone(region string) string {
+	lastChar := region[len(region)-1]
+	if lastChar >= 'a' && lastChar <= 'z' {
+		return region
+	}
+	return ""
+}
+
 func getInstanceType(instanceType string, instanceGPU string) string {
 	instanceTypes := make(map[string]string)
 	instanceTypes["m"] = "m5.2xlarge"