i2c: imx: fix handling of wait_for_completion_timeout result

wait_for_completion_timeout does not return negative values so
"result" handling here should be simplified to cover the actually
possible cases only.
Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-imx.c

@@ -628,9 +628,9 @@ static int i2c_imx_dma_write(struct imx_i2c_struct *i2c_imx,
 	result = wait_for_completion_timeout(
 				&i2c_imx->dma->cmd_complete,
 				msecs_to_jiffies(DMA_TIMEOUT));
-	if (result <= 0) {
+	if (result == 0) {
 		dmaengine_terminate_all(dma->chan_using);
-		return result ?: -ETIMEDOUT;
+		return -ETIMEDOUT;
 	}
 
 	/* Waiting for transfer complete. */
@@ -686,9 +686,9 @@ static int i2c_imx_dma_read(struct imx_i2c_struct *i2c_imx,
 	result = wait_for_completion_timeout(
 				&i2c_imx->dma->cmd_complete,
 				msecs_to_jiffies(DMA_TIMEOUT));
-	if (result <= 0) {
+	if (result == 0) {
 		dmaengine_terminate_all(dma->chan_using);
-		return result ?: -ETIMEDOUT;
+		return -ETIMEDOUT;
 	}
 
 	/* waiting for transfer complete. */