init: actually remount /sys when changing network namespaces

Fix a typo from before.

Bug: 73334854
Test: build
Change-Id: I66631a6f251960be0e02d8a119fa0ff7a00fb24c
diff --git a/init/service.cpp b/init/service.cpp
index 95b37ab..4c2747e 100644
--- a/init/service.cpp
+++ b/init/service.cpp
@@ -130,7 +130,7 @@
         if (umount2("/sys", MNT_DETACH) == -1) {
             return ErrnoError() << "Could not umount(/sys)";
         }
-        if (mount("", "/sys", "sys", kSafeFlags, "") == -1) {
+        if (mount("", "/sys", "sysfs", kSafeFlags, "") == -1) {
             return ErrnoError() << "Could not mount(/sys)";
         }
     }