xfs: remove xfs_iput

xfs_iput is just a small wrapper for xfs_iunlock + IRELE.  Having this
out of line wrapper means the trace events in those two can't track
their caller properly.  So just remove the wrapper and opencode the
unlock + rele in the few callers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>

diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
index 2998b2c..065c1ad 100644
--- a/fs/xfs/xfs_inode_item.c
+++ b/fs/xfs/xfs_inode_item.c
@@ -660,8 +660,10 @@
 
 	lock_flags = iip->ili_lock_flags;
 	iip->ili_lock_flags = 0;
-	if (lock_flags)
-		xfs_iput(iip->ili_inode, lock_flags);
+	if (lock_flags) {
+		xfs_iunlock(iip->ili_inode, lock_flags);
+		IRELE(iip->ili_inode);
+	}
 }
 
 /*