ath10k: free collected fw stats memory if .pull_fw_stats fails
ath10k: free collected fw stats memory if .pull_fw_stats fails

If .pull_fw_stats() fails for some reason while processing
fw stats event, collected pdev/vdev/peer stats just before
the failure should be freed. This is unlikely to happen,
just code review catch.

Signed-off-by: Raja Mani <a685ff34090a66418ef7e396036418dd8d6d0c79@qti.qualcomm.com>
Signed-off-by: Kalle Valo <7081a7d99b8c74c0698a728df19e3915a995d7e1@qca.qualcomm.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs