eventfs: Remove extra dget() in eventfs_create_events_dir()

The creation of the top events directory does a dget() at the end of the
creation in eventfs_create_events_dir() with a comment saying the final
dput() will happen when it is removed. The problem is that a dget() is
already done on the dentry when it was created with tracefs_start_creating()!
The dget() now just causes a memory leak of that dentry.

Remove the extra dget() as the final dput() in the deletion of the events
directory actually matches the one in tracefs_start_creating().

Link: https://lore.kernel.org/linux-trace-kernel/20231031124229.4f2e3fa1@gandalf.local.home

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Fixes: 5790b1f ("eventfs: Remove eventfs_file and just use eventfs_inode")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

fs/tracefs/event_inode.c

@@ -774,9 +774,6 @@ struct eventfs_inode *eventfs_create_events_dir(const char *name, struct dentry
 	fsnotify_mkdir(dentry->d_parent->d_inode, dentry);
 	tracefs_end_creating(dentry);
 
-	/* Will call dput when the directory is removed */
-	dget(dentry);
-
 	return ei;
 
  fail: