Staging: easycap: use after free in easycap_delete()

The JOM() macro dereferences peasycap, so I moved the free down some
lines.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>