sound/oss/rme96xx.c: fix two check after use

@@ -1534,18 +1534,20 @@
 static ssize_t rme96xx_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
 {
 	struct dmabuf *dma = (struct dmabuf *)file->private_data;
 	ssize_t ret = 0;
 	int cnt; /* number of bytes from "buffer" that will/can be used */
-	int hop = count/dma->outchannels;
+	int hop;
 	int hwp;
 	int exact = (file->f_flags & O_NONBLOCK); 
 
 
 	if(dma == NULL || (dma->s) == NULL) 
 		return -ENXIO;
 
+	hop = count/dma->outchannels;
+
 	if (dma->mmapped || !dma->opened)
 		return -ENXIO;
 
 	if (!access_ok(VERIFY_READ, buffer, count))
 		return -EFAULT;

@@ -1599,18 +1601,20 @@
 static ssize_t rme96xx_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
 { 
 	struct dmabuf *dma = (struct dmabuf *)file->private_data;
 	ssize_t ret = 0;
 	int cnt; /* number of bytes from "buffer" that will/can be used */
-	int hop = count/dma->inchannels;
+	int hop;
 	int hwp;
 	int exact = (file->f_flags & O_NONBLOCK); 
 
 
 	if(dma == NULL || (dma->s) == NULL) 
 		return -ENXIO;
 
+	hop = count/dma->inchannels;
+
 	if (dma->mmapped || !dma->opened)
 		return -ENXIO;
 
 	if (!access_ok(VERIFY_WRITE, buffer, count))
 		return -EFAULT;