dm: add add_disk() error handling

We never checked for errors on add_disk() as this function returned
void. Now that this is fixed, use the shiny new error handling.

There are two calls to dm_setup_md_queue() which can fail then, one on
dm_early_create() and we can easily see that the error path there
calls dm_destroy in the error path. The other use case is on the ioctl
table_load case. If that fails userspace needs to call the
DM_DEV_REMOVE_CMD to cleanup the state - similar to any other
failure.

Reviewed-by: Hannes Reinecke <[email protected]>
Signed-off-by: Luis Chamberlain <[email protected]>
Signed-off-by: Mike Snitzer <[email protected]>

0 files changed, 0 insertions, 0 deletions