V4L/DVB (11953): videobuf-dma-sg: return -ENOMEM if vmalloc fails
V4L/DVB (11953): videobuf-dma-sg: return -ENOMEM if vmalloc fails

it is better return -ENOMEM than -EIO

Signed-off-by: Figo.zhang <1dadb53ceec98c527344000c6a2ae30839312d78@gmail.com>
Signed-off-by: Douglas Schilling Landgraf <cb5f9630225b7afa1e13760d30868c8ce876fc60@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <ad86ba2154032c9f55743a190faa2459a9d61d42@redhat.com>

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