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block: fix bdrv_root_attach_child forget to unref child_bs 

bdrv_root_attach_child promises to drop child_bs reference on failure.
It does it on first handled failure path, but not on the second. Fix
that.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200324155921.23822-1-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2020-03-24 18:59:21 +03:00 committed by Kevin Wolf
parent 34afc5c298
commit 7a26df203c
1 changed files with 1 additions and 0 deletions
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1
block.c
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@ -2617,6 +2617,7 @@ BdrvChild *bdrv_root_attach_child(BlockDriverState *child_bs,
error_propagate(errp, local_err);
g_free(child);
bdrv_abort_perm_update(child_bs);
bdrv_unref(child_bs);
return NULL;
}
}