xfs: preserve i_state around inode_init_always in xfs_reinit_inode

This is in preparation for the routine starting to zero the field.

De facto coded by Dave Chinner, see:
https://lore.kernel.org/linux-fsdevel/ZmgtaGglOL33Wkzr@dread.disaster.area/Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Link: https://lore.kernel.org/r/20240611120626.513952-2-mjguzik@gmail.comSigned-off-by: Christian Brauner <brauner@kernel.org>

fs/xfs/xfs_icache.c

@@ -314,6 +314,7 @@ xfs_reinit_inode(
 	dev_t			dev = inode->i_rdev;
 	kuid_t			uid = inode->i_uid;
 	kgid_t			gid = inode->i_gid;
+	unsigned long		state = inode->i_state;
 
 	error = inode_init_always(mp->m_super, inode);
 
@@ -324,6 +325,7 @@ xfs_reinit_inode(
 	inode->i_rdev = dev;
 	inode->i_uid = uid;
 	inode->i_gid = gid;
+	inode->i_state = state;
 	mapping_set_large_folios(inode->i_mapping);
 	return error;
 }