net: Fix checkpatch WARNING: please, no space before tabs

This patch fixes multiple occurrences of space before tabs warnings.
More lines of code were moved than required to keep kernel-doc
comments uniform.
Signed-off-by: NTobin C. Harding <me@tobin.cc>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/core/dev.c

@@ -7670,9 +7670,9 @@ EXPORT_SYMBOL(alloc_netdev_mqs);
  * @dev: device
  *
  * This function does the last stage of destroying an allocated device
- * 	interface. The reference to the device object is released.
- *	If this is the last reference then it will be freed.
- *	Must be called in process context.
+ * interface. The reference to the device object is released. If this
+ * is the last reference then it will be freed.Must be called in process
+ * context.
  */
 void free_netdev(struct net_device *dev)
 {