Exit immediately on some linklib failures

If the library couldn't be printed to the string, installd should fail
early instead of trying to chmod() back to uninitialized stat struct.

Bug: 3121721
Change-Id: I8a3604954ae657a1e07c1ad8d5569aa80aff9e0a
diff --git a/cmds/installd/commands.c b/cmds/installd/commands.c
index a5b3e0e..2f03c7a 100644
--- a/cmds/installd/commands.c
+++ b/cmds/installd/commands.c
@@ -946,14 +946,12 @@
     const size_t libdirLen = strlen(dataDir) + strlen(PKG_LIB_POSTFIX);
     if (libdirLen >= PKG_PATH_MAX) {
         LOGE("library dir len too large");
-        rc = -1;
-        goto out;
+        return -1;
     }
 
     if (snprintf(libdir, sizeof(libdir), "%s%s", dataDir, PKG_LIB_POSTFIX) != (ssize_t)libdirLen) {
         LOGE("library dir not written successfully: %s\n", strerror(errno));
-        rc = -1;
-        goto out;
+        return -1;
     }
 
     if (stat(dataDir, &s) < 0) return -1;