Drop the lock before returning -EINVAL.
Fixes: ecaccdae7a7e ("wifi: mt76: mt7915: rework mt7915_thermal_temp_store()")
Signed-off-by: Dan Carpenter <[email protected]>
Acked-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>