remoteproc: fix rproc_alloc_carveout() bad variable cast

As dma member of struct rproc_mem_entry is dma_addr_t, no
need to cast in u32.

Fixes: d7c51706 ("remoteproc: add alloc ops in rproc_mem_entry struct")
Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

drivers/remoteproc/remoteproc_core.c

@@ -819,7 +819,7 @@ static int rproc_alloc_carveout(struct rproc *rproc,
 		mem->da = (u32)dma;
 	}
 
-	mem->dma = (u32)dma;
+	mem->dma = dma;
 	mem->va = va;
 
 	return 0;