[media] s5p-mfc: Remove redundant 'break'

The code returns before this statement. Hence not required.
Silences the following smatch message:
drivers/media/platform/s5p-mfc/s5p_mfc_opr_v5.c:525
s5p_mfc_set_dec_frame_buffer_v5() info: ignoring unreachable code.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/platform/s5p-mfc/s5p_mfc_opr_v5.c

@@ -523,7 +523,6 @@ int s5p_mfc_set_dec_frame_buffer_v5(struct s5p_mfc_ctx *ctx)
 		mfc_err("Unknown codec for decoding (%x)\n",
 			ctx->codec_mode);
 		return -EINVAL;
-		break;
 	}
 	frame_size = ctx->luma_size;
 	frame_size_ch = ctx->chroma_size;