Subject: ARM: OMAP: Fix warning in dma.c

Fix warning: 'offset' might be uninitialized

Signed-off-by: Tony Lindgren <tony@atomide.com>

--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -747,7 +747,7 @@ int omap_set_dma_callback(int lch,
  */
 dma_addr_t omap_get_dma_src_pos(int lch)
 {
-	dma_addr_t offset;
+	dma_addr_t offset = 0;
 
 	if (cpu_class_is_omap1())
 		offset = (dma_addr_t) (OMAP1_DMA_CSSA_L_REG(lch) |