fix typos

builder/amazon/chroot/builder.go

@@ -83,7 +83,7 @@ func (b *Builder) Prepare(raws ...interface{}) ([]string, error) {
 	}
 
 	if b.config.Architecture == "" {
-		b.config.Architecture == "x86_64"
+		b.config.Architecture = "x86_64"
 	}
 
 	if b.config.PackerConfig.PackerForce {
@@ -186,9 +186,9 @@ func (b *Builder) Prepare(raws ...interface{}) ([]string, error) {
 		}
 	}
 	valid := false
-	for validArch, _ := range []string{"x86_64", "arm64"} {
+	for _, validArch := range []string{"x86_64", "arm64"} {
 		if validArch == b.config.Architecture {
-			matched = true
+			valid = true
 			break
 		}
 	}
@@ -291,7 +291,6 @@ func (b *Builder) Run(ctx context.Context, ui packer.Ui, hook packer.Hook) (pack
 			RootVolumeSize:           b.config.RootVolumeSize,
 			EnableAMISriovNetSupport: b.config.AMISriovNetSupport,
 			EnableAMIENASupport:      b.config.AMIENASupport,
-			Architecture:             b.config.Architecture,
 		},
 		&awscommon.StepAMIRegionCopy{
 			AccessConfig:      &b.config.AccessConfig,

builder/amazon/chroot/step_register_ami.go

@@ -16,7 +16,6 @@ type StepRegisterAMI struct {
 	RootVolumeSize           int64
 	EnableAMIENASupport      *bool
 	EnableAMISriovNetSupport bool
-	Architecture             string
 }
 
 func (s *StepRegisterAMI) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
@@ -118,7 +117,7 @@ func buildBaseRegisterOpts(config *Config, sourceImage *ec2.Image, rootVolumeSiz
 	if config.FromScratch {
 		return &ec2.RegisterImageInput{
 			Name:                &config.AMIName,
-			Architecture:        aws.String(s.Architecture),
+			Architecture:        aws.String(config.Architecture),
 			RootDeviceName:      aws.String(rootDeviceName),
 			VirtualizationType:  aws.String(config.AMIVirtType),
 			BlockDeviceMappings: newMappings,

builder/amazon/ebssurrogate/builder.go

@@ -94,12 +94,12 @@ func (b *Builder) Prepare(raws ...interface{}) ([]string, error) {
 	}
 
 	if b.config.Architecture == "" {
-		b.config.Architecture == "x86_64"
+		b.config.Architecture = "x86_64"
 	}
 	valid := false
-	for validArch, _ := range []string{"x86_64", "arm64"} {
+	for _, validArch := range []string{"x86_64", "arm64"} {
 		if validArch == b.config.Architecture {
-			matched = true
+			valid = true
 			break
 		}
 	}