staging: bcm2835-audio: deallocate work when queue_work(...) fails

This patch de-allocates work when queue_work(..) fails in the
bcm2835-audio work functions
Signed-off-by: NAishwarya Pant <aishpant@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c

@@ -145,6 +145,7 @@ int bcm2835_audio_start(struct bcm2835_alsa_stream *alsa_stream)
 		work->alsa_stream = alsa_stream;
 		work->cmd = BCM2835_AUDIO_START;
 		if (!queue_work(alsa_stream->my_wq, &work->my_work)) {
+			kfree(work);
 			return -EBUSY;
 		}
 	}
@@ -168,6 +169,7 @@ int bcm2835_audio_stop(struct bcm2835_alsa_stream *alsa_stream)
 		work->alsa_stream = alsa_stream;
 		work->cmd = BCM2835_AUDIO_STOP;
 		if (!queue_work(alsa_stream->my_wq, &work->my_work)) {
+			kfree(work);
 			return -EBUSY;
 		}
 	}
@@ -194,6 +196,7 @@ int bcm2835_audio_write(struct bcm2835_alsa_stream *alsa_stream,
 		work->src = src;
 		work->count = count;
 		if (!queue_work(alsa_stream->my_wq, &work->my_work)) {
+			kfree(work);
 			return -EBUSY;
 		}
 	}