remoteproc: Use %pe format string to print return error code

Use %pe format string to print return error code which
make the error message easier to understand.

Signed-off-by: Mark-PK Tsai <mark-pk.tsai@mediatek.com>
Link: https://lore.kernel.org/r/20211102141535.28372-1-mark-pk.tsai@mediatek.com
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
[Fixed capital letter in subject line]
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>

drivers/remoteproc/remoteproc_core.c

@@ -577,8 +577,8 @@ static int rproc_handle_vdev(struct rproc *rproc, void *ptr,
 					   dma_get_mask(rproc->dev.parent));
 	if (ret) {
 		dev_warn(dev,
-			 "Failed to set DMA mask %llx. Trying to continue... %x\n",
-			 dma_get_mask(rproc->dev.parent), ret);
+			 "Failed to set DMA mask %llx. Trying to continue... (%pe)\n",
+			 dma_get_mask(rproc->dev.parent), ERR_PTR(ret));
 	}
 
 	/* parse the vrings */