lightnvm: pblk: kick writer on write recovery path

In case of write recovery path, there is a chance that writer thread
is not active, kick immediately instead of waiting for timer.

Signed-off-by: Igor Konopko <[e-mail]>
Reviewed-by: Javier González <[e-mail]>
Reviewed-by: Hans Holmberg <[e-mail]>
Signed-off-by: Matias Bjørling <[e-mail]>
Signed-off-by: Jens Axboe <[e-mail]>

drivers/lightnvm/pblk-write.c

···
 	mempool_free(recovery, &pblk->rec_pool);
 
 	atomic_dec(&pblk->inflight_io);
+	pblk_write_kick(pblk);
 }