refactor: simplify return from Migrator operations & AutoMigrate calls

store/migrations.go

@@ -109,17 +109,10 @@ var (
 					Encoded    []byte
 				}
 
-				if err := tx.AutoMigrate(&ImportLog{}); err != nil {
-					return err
-				}
-
-				return nil
+				return tx.AutoMigrate(&ImportLog{})
 			},
 			Rollback: func(tx *gorm.DB) error {
-				if err := tx.Migrator().DropConstraint(&ImportLog{}, "file_id"); err != nil {
-					return err
-				}
-				return nil
+				return tx.Migrator().DropConstraint(&ImportLog{}, "file_id")
 			},
 		},
 		{
@@ -323,19 +316,13 @@ var (
 )
 
 func initialMigration(tx *gorm.DB) (err error) {
-	err = tx.AutoMigrate(
+	return tx.AutoMigrate(
 		&Show{},
 		&File{},
 		&ImportLog{},
 		&Playlist{},
 		&PlaylistEntry{},
 	)
-
-	if err != nil {
-		return
-	}
-
-	return nil
 }
 
 func (st *Store) initDBModel(cfg DBConfig) (err error) {