wifi: mac80211: check link exists before use
If the assoc link doesn't exist yet at this point, we cannot use it yet. This isn't normally the case, but e.g. in case of FT-DS (or just broken userspace) the link might not be set up yet and will only be created later in this function. Check that the link exists. Fixes: 310c8387 ("wifi: mac80211: clean up connection process") Reported-by: Dan Carpenter <dan.carpenter@linaro.org> Closes: https://lore.kernel.org/r/3151f5d0-c18f-413d-b34b-b94f095b947c@moroto.mountain Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com> Link: https://msgid.link/20240301193633.c886d300e90a.Ie1d5e23b2a033d934d343c37249f6f4dfddcc5fe@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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