[media] s5p-mfc: Correct check of vb2_dma_contig_init_ctx return value

vb2_dma_contig_init_ctx returns an error if failed, NULL check is not necessary.

Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1 file changed