jbd2: fix a potential leak of a journal_head on an error path
jbd2: fix a potential leak of a journal_head on an error path

drop jh->b_jcount in error path

Signed-off-by: Ding Dinghua <000ddc22d0b04c951c29285be5cbb235d9ebfd3b@nrchpc.ac.cn>
Signed-off-by: "Theodore Ts'o" <4ed386e0495d3e109932df055831d9ec2f824927@mit.edu>

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