onedrive: set all metadata permissions and return error summary

Before this change when setting permissions from the metadata rclone
would stop on the first error.

This change causes rclone to attempt to set all the permissions and
return an error summary at the end.

backend/onedrive/metadata.go

@@ -12,6 +12,7 @@ import (
 	"github.com/rclone/rclone/backend/onedrive/api"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/lib/dircache"
+	"github.com/rclone/rclone/lib/errcount"
 	"golang.org/x/exp/slices" // replace with slices after go1.21 is the minimum version
 )
 
@@ -432,17 +433,21 @@ func (m *Metadata) sortPermissions() (add, update, remove []*api.PermissionsType
 
 // processPermissions executes the add, update, and remove queues for writing permissions
 func (m *Metadata) processPermissions(ctx context.Context, add, update, remove []*api.PermissionsType) (newPermissions []*api.PermissionsType, err error) {
+	errs := errcount.New()
 	for _, p := range remove { // remove (need to do these first because of remove + add workaround)
 		_, err := m.removePermission(ctx, p)
 		if err != nil {
-			return newPermissions, err
+			fs.Errorf(m.remote, "Failed to remove permission: %v", err)
+			errs.Add(err)
 		}
 	}
 
 	for _, p := range add { // add
 		newPs, _, err := m.addPermission(ctx, p)
 		if err != nil {
-			return newPermissions, err
+			fs.Errorf(m.remote, "Failed to add permission: %v", err)
+			errs.Add(err)
+			continue
 		}
 		newPermissions = append(newPermissions, newPs...)
 	}
@@ -450,12 +455,14 @@ func (m *Metadata) processPermissions(ctx context.Context, add, update, remove [
 	for _, p := range update { // update
 		newP, _, err := m.updatePermission(ctx, p)
 		if err != nil {
-			return newPermissions, err
+			fs.Errorf(m.remote, "Failed to update permission: %v", err)
+			errs.Add(err)
+			continue
 		}
 		newPermissions = append(newPermissions, newP)
 	}
 
-	return newPermissions, err
+	return newPermissions, errs.Err("failed to set permissions")
 }
 
 // fillRecipients looks for recipients to add from the permission passed in.