ext4: remove unnecessary ext4_get_group_info in ext4_mb_load_buddy
ext4: remove unnecessary ext4_get_group_info in ext4_mb_load_buddy

ext4_mb_load_buddy() calls ext4_get_group_info() for setting both
"grp" and "e4b->bd_info", but it could do "e4b->bd_info = grp".

Reported-by:  Andreas Dilger <fd4823dd86d134508df78a168e24c446ce7699f3@whamcloud.com>
Signed-off-by: Tao Ma <85dcca6eaef7f88f8513274f73363a9b5feab3ec@taobao.com>
Signed-off-by: "Theodore Ts'o" <4ed386e0495d3e109932df055831d9ec2f824927@mit.edu>

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