Similar to the issue fixed in mt7921_coredump_work, fix a possible memory
leak in mt7615_coredump_work routine.
Fixes: d2bf7959d9c0f ("mt76: mt7663: introduce coredump support")
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>