erofs: remove dead code in erofs_fc_parse_param

If an option is unknown to erofs, which means that option is not in
`erofs_fs_parameters`, `fs_parse` will return -ENOPARAM, which makes
`erofs_fc_parse_param` returns earlier.

Signed-off-by: Chen Linxuan <[email protected]>
Reviewed-by: Gao Xiang <[email protected]>
Link: https://lore.kernel.org/r/DB86A4E2BB2BB44E+20250117100635.335963-2-chenlinxuan@uniontech.com
Signed-off-by: Gao Xiang <[email protected]>

Author: black-desk

fs/erofs/super.c

@@ -508,8 +508,6 @@ static int erofs_fc_parse_param(struct fs_context *fc,
 		errorfc(fc, "%s option not supported", erofs_fs_parameters[opt].name);
 #endif
 		break;
-	default:
-		return -ENOPARAM;
 	}
 	return 0;
 }