xive: fix opal_xive_set_vp_info() error path

In case of error, opal_xive_set_vp_info() will return without
unlocking the xive object. This is most certainly a typo.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

hw/xive.c

@@ -4421,8 +4421,8 @@ static int64_t opal_xive_set_vp_info(uint64_t vp_id,
 	if (!(flags & OPAL_XIVE_VP_ENABLED))
 		xive_vpc_scrub_clean(x, blk, idx);
 
-	unlock(&x->lock);
 bail:
+	unlock(&x->lock);
 	return rc;
 }