Improving r249461 by providing a better way to handle the clang warning.

PR:		kern/177164
Reviewed by:	jhb
Approved by:	sbruno (mentor)

1 files changed, 4 insertions, 3 deletions

diff --git a/sys/dev/ips/ips.c b/sys/dev/ips/ips.c
index 481dd4b..4de98ce 100644
--- a/sys/dev/ips/ips.c
+++ b/sys/dev/ips/ips.c
@@ -578,7 +578,7 @@ static int ips_copperhead_queue_init(ips_softc_t *sc)
 {
 	int error;
 	bus_dma_tag_t dmatag;
-	bus_dmamap_t dmamap = NULL;
+	bus_dmamap_t dmamap;
        	if (bus_dma_tag_create(	/* parent    */	sc->adapter_dmatag,
 				/* alignemnt */	1,
 				/* boundary  */	0,
@@ -595,7 +595,7 @@ static int ips_copperhead_queue_init(ips_softc_t *sc)
 				&dmatag) != 0) {
                 device_printf(sc->dev, "can't alloc dma tag for statue queue\n");
 		error = ENOMEM;
-		goto exit;
+		return error;
         }
 	if(bus_dmamem_alloc(dmatag, (void *)&(sc->copper_queue), 
 	   		    BUS_DMA_NOWAIT, &dmamap)){
@@ -623,7 +623,8 @@ static int ips_copperhead_queue_init(ips_softc_t *sc)
 	
 	return 0;
 exit:
-	bus_dmamem_free(dmatag, sc->copper_queue, dmamap);
+	if (sc->copper_queue != NULL)
+		bus_dmamem_free(dmatag, sc->copper_queue, dmamap);
 	bus_dma_tag_destroy(dmatag);
 	return error;
 }