[AF_PACKET]: Fix minor code duplication
[AF_PACKET]: Fix minor code duplication

Simplify some code by eliminating duplicate if-else clauses in
packet_do_bind().

Signed-off-by: Urs Thuermann <289c4a2cce68d99fb847fa5a2d1f81aecc99fcbc@isnogud.escape.de>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs