[PATCH] device-mapper dm-ioctl: missing put in table load error case

An error path in table_load() forgets to release a table that won't now be
referenced.

Signed-off-by: Alasdair G Kergon <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/md/dm-ioctl.c

···
 	if (!hc) {
 		DMWARN("device doesn't appear to be in the dev hash table.");
 		up_write(&_hash_lock);
+		dm_table_put(t);
 		return -ENXIO;
 	}