Minor cleanup of erofs property checking

Test: Presubmits
Change-Id: I4146224674c3546b7c48cb727f0662d3d347f02e
diff --git a/filesystem/filesystem.go b/filesystem/filesystem.go
index 87c6381..1e816a7 100644
--- a/filesystem/filesystem.go
+++ b/filesystem/filesystem.go
@@ -511,15 +511,15 @@
 			addStr("erofs_default_compressor", proptools.String(compressor))
 		}
 		if compressHints := f.properties.Erofs.Compress_hints; compressHints != nil {
-			addStr("erofs_default_compress_hints", android.PathForModuleSrc(ctx, *compressHints).String())
+			addPath("erofs_default_compress_hints", android.PathForModuleSrc(ctx, *compressHints))
 		}
 		if proptools.BoolDefault(f.properties.Erofs.Sparse, true) {
 			// https://source.corp.google.com/h/googleplex-android/platform/build/+/88b1c67239ca545b11580237242774b411f2fed9:core/Makefile;l=2292;bpv=1;bpt=0;drc=ea8f34bc1d6e63656b4ec32f2391e9d54b3ebb6b
 			addStr("erofs_sparse_flag", "-s")
 		}
-	}
-	// Raise an exception if the propfile contains erofs properties, but the fstype is not erofs
-	if fs := fsTypeStr(f.fsType(ctx)); fs != "erofs" && (f.properties.Erofs.Compressor != nil || f.properties.Erofs.Compress_hints != nil || f.properties.Erofs.Sparse != nil) {
+	} else if f.properties.Erofs.Compressor != nil || f.properties.Erofs.Compress_hints != nil || f.properties.Erofs.Sparse != nil {
+		// Raise an exception if the propfile contains erofs properties, but the fstype is not erofs
+		fs := fsTypeStr(f.fsType(ctx))
 		ctx.PropertyErrorf("erofs", "erofs is non-empty, but FS type is %s\n. Please delete erofs properties if this partition should use %s\n", fs, fs)
 	}