staging: r8188eu: remove else after return

Conform to Linux kernel coding style.

Reported by checkpatch:

WARNING: else is not generally useful after a break or return

Signed-off-by: Rebecca Mckeever <remckee0@gmail.com>
Link: https://lore.kernel.org/r/84db0348481b54f58cb0b6200fa9ae471ee06b3b.1648888461.git.remckee0@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>